LOCAL CLIMATOLOGICAL DATA Monthly Summary May 2026 Station: Blue Hill Meteorological Observatory 2 Latitude: 42° 12' 44" N Longitude: 71° 06' 53" W Elevation (ground): 635 feet Time Zone: Eastern +--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind |Solar | | +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+ | | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak |2Minute| Mean | | | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ W | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | a | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | t | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | t | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | s | | e| m | m | e | n | t | n | g | g |8 smk, hz| r| v | w | x | n | n | d | d | r | d | r | d | r | m² | | | | | | | | | | |9 blw snw| | | | | | | | | | | | | | | | 1| 2 | 3 | 4A | 4B | 5 | 6 | 7 | 8 | 9 |10| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18| 19| 20| 21| 22| 23 | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |01| 63.7 | 45.2 | 54.5 | 55.4 | 34| 45| 10| 0|.........| 0| 0.00| 0.0| 29.91| 29.81|29.851|10.8| 9.4|307| 28| W| 21|301| 412 | |02| 57.2 | 45.6 | 51.4 | 49.4 | 42| 77| 13| 0|.........| 0| 0.03| 0.0| 29.93| 29.83|29.879| 8.8| 7.3|221| 30| S| 24|180| 115 | |03| 52.8 | 40.9 | 46.8*| 45.6 | 32| 62| 18| 0|.........| 0| 0.00| 0.0| 29.87| 29.72|29.772|12.8|11.4|323| 38|WNW| 26|315| 109 | |04| 70.9 | 41.8 | 56.3 | 57.1 | 35| 46| 8| 0|.........| 0| 0.00| 0.0| 29.89| 29.78|29.846|17.0|15.9|233| 42| SW| 31|240| 305 | |05| 78.4 | 49.3 | 63.8 | 61.9 | 50| 66| 1| 0|.........| 0| 0.00| 0.0| 29.88| 29.77|29.839|19.4|19.1|199| 49| S| 34|186| 287 | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 68.0 | 54.5 | 61.3 | 59.3 | 54| 84| 3| 0|.........| 0| 0.07| 0.0| 29.87| 29.73|29.804|19.9|19.4|200| 49| S| 33|187| 142 | |07| 64.7 | 45.9 | 55.3 | 54.4 | 40| 62| 9| 0|.........| 0| 0.22| 0.0| 29.80| 29.71|29.757|10.5|10.3|309| 29|WNW| 21|296| 290 | |08| 61.3 | 40.4*| 50.8 | 50.9 | 32| 49| 14| 0|.........| 0| 0.00| 0.0| 29.97| 29.77|29.846|11.6|11.2|292| 31| W| 23|282| 286 | |09| 58.0 | 43.7 | 50.8 | 50.8 | 44| 78| 14| 0|.........| 0| 0.32| 0.0| 30.02| 29.90|29.952|10.6| 8.9|187| 37| S| 23|180| 80 | |10| 71.7 | 49.8 | 60.8 | 59.7 | 53| 80| 4| 0|.........| 0| 0.00| 0.0| 30.04| 29.88|29.932|10.5| 8.4|227| 30| S| 20|199| 190 | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 62.3 | 45.5 | 53.9 | 54.7 | 32| 42| 11| 0|.........| 0| 0.00| 0.0| 30.11| 30.02|30.065| 8.2| 7.7|342| 21|NNW| 15|352| 171 | |12| 63.8 | 42.6 | 53.2 | 53.8 | 32| 46| 11| 0|.........| 0| 0.00| 0.0| 30.16| 30.06|30.106| 8.9| 7.7|336| 28| NW| 20|305| 329 | |13| 64.7 | 46.8 | 55.8 | 54.1 | 45| 71| 9| 0|.........| 0| 0.00| 0.0| 30.09| 29.91|30.005|16.7|16.4|188| 48| S| 31|196| 162 | |14| 60.6 | 48.2 | 54.4 | 54.7 | 52| 90| 10| 0|.........| 0| 0.25| 0.0| 29.92| 29.69|29.778|10.9| 5.6|162| 43| S| 22|148| 67 | |15| 55.4 | 47.7 | 51.6 | 50.2 | 49| 95| 13| 0|.........| 0| 0.02| 0.0| 30.06| 29.71|29.882| 6.1| 4.0| 3| 19|ENE| 14|292| 110 | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 77.7 | 47.4 | 62.5 | 62.2 | 49| 65| 2| 0|.........| 0| 0.00| 0.0| 30.12| 29.89|30.002|13.5|12.7|237| 32| W| 24|221| 321 | |17| 86.3*| 56.1 | 71.2 | 72.2 | 55| 58| 0| 6|.........| 0| 0.05| 0.0| 30.12| 29.89|29.989|12.5|10.9|274| 36| W| 26|302| 306 | |18| 84.8 | 62.4 | 73.6*| 72.9 | 54| 53| 0| 9|.........| 0| 0.00| 0.0| 30.25| 30.08|30.155|12.5| 7.8|167| 35| S| 24|200| 302 | |19| | | | | | | | | | | | | | | | | | | | | | | | |20| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | |22| | | | | | | | | | | | | | | | | | | | | | | | |23| | | | | | | | | | | | | | | | | | | | | | | | |24| | | | | | | | | | | | | | | | | | | | | | | | |25| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |26| | | | | | | | | | | | | | | | | | | | | | | | |27| | | | | | | | | | | | | | | | | | | | | | | | |28| | | | | | | | | | | | | | | | | | | | | | | | |29| | | | | | | | | | | | | | | | | | | | | | | | |30| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |31| | | | | | | | | | | | | | | | | | | | | | | | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1202.3| 853.8|------|------|---|----| 150| 15| Days | 0.96| 0.0| 30.25| 29.69|29.915|12.3| 6.3|237| 49| S| 34|186| ---- | +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 66.8| 47.4| 57.1 | 56.6 | 44|65.1|----|----|≥.01 Inch 7|93.40| 0.0| 18 | 14 |------|----|----|---| 5+ | 5 | 221| +------+------+------+------+---+----+----+----+------------+-----+-----+------+------+------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 0| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |5988| 21|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 0.32| 9 | 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 0 | 0 |----|----| Clear 0 Partly Cloudy 0 Cloudy 0 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Units: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. Column 4A: value is (MAX+MIN) / 2. Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F. Data in columns 9, 10, 12 are entered manually by the station observer. Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations.OBSERVATIONS AT 3-HOUR INTERVALS May 2026: Blue Hill Meteorological Observatory 2 +--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 1 | MAY 2 | MAY 3 | | | | | |00| | | | | | | | | | 0|29.90| 0.00| 49| 36| 59|22| 10| 13| 0|29.83| 0.00| 47| 39| 75|33| 11| 18| |03| | | | | | | | | | 0|29.88| 0.00| 48| 38| 70|24| 9| 12| 0|29.78| 0.00| 43| 38| 81|34| 9| 18| |06| | | | | | | | | | 25|29.90| 0.00| 46| 41| 81|23| 7| 15| 83|29.74| 0.00| 41| 36| 81|33| 13| 18| |09| 786|29.85| 0.00| 52| 37| 55|34| 13| 17| 766|29.92| 0.00| 50| 45| 82|19| 4| 7| 192|29.72| 0.00| 42| 37| 81|34| 13| 25| |12| 928|29.84| 0.00| 58| 36| 45|31| 15| 28| 174|29.89| 0.00| 55| 39| 55|25| 10| 14| 258|29.74| 0.00| 47| 33| 57|34| 15| 24| |15| 663|29.81| 0.00| 62| 34| 35|32| 10| 16| 237|29.86| 0.00| 51| 43| 75|18| 19| 30| 248|29.72| 0.00| 52| 29| 42|33| 22| 32| |18| 21|29.84| 0.00| 59| 30| 33|30| 13| 16| 19|29.86| 0.00| 50| 45| 81|22| 7| 9| 40|29.80| 0.00| 49| 27| 41|32| 13| 23| |21| 0|29.89| 0.00| 52| 29| 40|31| 4| 4| 0|29.87| 0.00| 48| 44| 88|20| 1| 2| 0|29.85| 0.00| 45| 27| 49|27| 11| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |00| 0|29.87| 0.00| 42| 27| 56|27| 14| 19| 0|29.87| 0.00| 51| 44| 77|20| 14| 21| 0|29.87| 0.00| 59| 51| 75|20| 22| 33| |03| 0|29.87| 0.00| 46| 28| 50|24| 13| 16| 0|29.86| 0.00| 50| 45| 84|20| 15| 22| 0|29.86| 0.00| 58| 52| 82|20| 17| 29| |06| 155|29.89| 0.00| 47| 31| 52|23| 14| 19| 93|29.85| 0.00| 52| 48| 86|18| 17| 25| 107|29.86| 0.00| 56| 53| 89|19| 23| 31| |09| 714|29.87| 0.00| 61| 36| 39|24| 16| 21| 178|29.86| 0.00| 65| 51| 61|20| 13| 23| 680|29.84| 0.00| 65| 55| 69|20| 22| 39| |12| 912|29.80| 0.00| 68| 35| 30|24| 19| 31| 891|29.83| 0.00| 78| 55| 45|18| 23| 32| 540|29.80| 0.00| 66| 55| 68|19| 24| 38| |15| 622|29.78| 0.00| 71| 37| 29|23| 16| 27| 606|29.78| 0.00| 73| 51| 47|18| 32| 45| 153|29.77| 0.00| 60| 56| 84|19| 23| 34| |18| 32|29.80| 0.00| 63| 41| 44|20| 22| 29| 65|29.80| 0.00| 63| 50| 62|20| 24| 36| 7|29.75| 0.00| 55| 54| 95|19| 19| 33| |21| 0|29.88| 0.00| 55| 42| 61|20| 21| 28| 0|29.86| 0.00| 60| 49| 68|20| 24| 34| 0|29.73| 0.00| 56| 54| 96|20| 14| 24| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |00| 0|29.74| 0.00| 57| 56| 97|28| 8| 14| 0|29.78| 0.00| 47| 29| 50|33| 12| 19| 0|29.97| 0.00| 46| 34| 62|25| 7| 8| |03| 0|29.75| 0.05| 50| 48| 93|31| 11| 17| 0|29.80| 0.00| 41| 30| 63|29| 9| 11| 0|29.98| 0.00| 47| 32| 55|23| 8| 10| |06| 18|29.77| 0.00| 46| 45| 96|34| 6| 8| 107|29.84| 0.00| 42| 31| 65|27| 10| 14| 25|30.01| 0.00| 49| 35| 58|20| 6| 8| |09| 729|29.79| 0.00| 55| 45| 69|32| 0| 0| 742|29.84| 0.00| 55| 30| 37|31| 16| 23| 218|29.99| 0.00| 49| 41| 76|13| 10| 18| |12| 933|29.75| 0.00| 62| 40| 44|29| 11| 20|1116|29.81| 0.00| 61| 33| 35|27| 18| 31| 223|29.94| 0.00| 58| 49| 72|17| 12| 17| |15| 649|29.72| 0.00| 64| 33| 32|31| 10| 20| 387|29.82| 0.00| 56| 33| 41|26| 16| 29| 130|29.91| 0.00| 57| 51| 81|19| 12| 16| |18| 28|29.74| 0.00| 58| 31| 36|31| 14| 25| 30|29.85| 0.00| 54| 32| 44|28| 14| 20| 7|29.94| 0.10| 53| 52| 95|19| 19| 25| |21| 0|29.79| 0.00| 50| 31| 47|30| 14| 17| 0|29.93| 0.00| 48| 34| 58|26| 11| 15| 0|29.93| 0.00| 50| 49| 95|16| 12| 31| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |00| 0|29.90| 0.00| 50| 49| 96|18| 15| 18| 0|30.04| 0.00| 58| 41| 53|34| 10| 18| 0|30.08| 0.00| 46| 32| 60|01| 11| 13| |03| 0|29.91| 0.00| 51| 50| 97|24| 11| 18| 0|30.05| 0.00| 53| 32| 45|34| 13| 20| 0|30.10| 0.00| 44| 33| 66|33| 9| 12| |06| 62|29.93| 0.00| 51| 50| 97|19| 10| 13| 91|30.09| 0.00| 51| 33| 51|34| 7| 11| 91|30.13| 0.00| 44| 33| 65|34| 9| 13| |09| 413|29.94| 0.00| 59| 54| 86|18| 6| 14| 424|30.10| 0.00| 55| 33| 44|32| 11| 14| 816|30.15| 0.00| 56| 31| 39|32| 5| 14| |12| 490|29.93| 0.00| 67| 56| 69|23| 12| 20| 394|30.08| 0.00| 61| 31| 32|33| 9| 19|1202|30.11| 0.00| 61| 34| 36|29| 16| 21| |15| 202|29.89| 0.00| 71| 57| 61|22| 15| 23| 227|30.03| 0.00| 59| 31| 34|28| 7| 12| 844|30.07| 0.00| 62| 31| 31|30| 9| 18| |18| 37|29.92| 0.00| 66| 56| 69|23| 9| 15| 46|30.04| 0.00| 57| 30| 36|01| 8| 14| 39|30.08| 0.00| 60| 31| 34|28| 9| 14| |21| 0|29.99| 0.00| 61| 53| 76|27| 9| 12| 0|30.07| 0.00| 50| 30| 46|34| 7| 12| | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |00| | | | | | | | | | 0|29.91| 0.00| 52| 48| 84|17| 19| 31| 0|29.72| 0.00| 48| 48| 97|33| 7| 9| |03| | | | | | | | | | 0|29.86| 0.00| 53| 49| 86|15| 13| 19| 0|29.74| 0.00| 49| 49| 97|32| 3| 5| |06| 100|30.08| 0.00| 47| 40| 75|19| 10| 14| 23|29.83| 0.00| 55| 50| 84|14| 15| 22| 49|29.79| 0.00| 50| 49| 97|00| 4| 8| |09| 151|30.08| 0.00| 51| 44| 78|17| 9| 15| 248|29.81| 0.00| 56| 54| 93|15| 14| 22| 264|29.84| 0.00| 53| 51| 93|03| 6| 10| |12| 158|30.03| 0.00| 53| 45| 75|17| 15| 31| 313|29.77| 0.00| 60| 56| 86|15| 10| 20| 250|29.89| 0.00| 50| 48| 93|05| 10| 16| |15| 754|29.94| 0.00| 64| 45| 50|19| 23| 38| 56|29.71| 0.08| 58| 56| 95|17| 8| 13| 221|29.92| 0.00| 51| 50| 96|05| 8| 13| |18| 33|29.95| 0.00| 57| 45| 65|18| 20| 38| 23|29.70| 0.00| 54| 52| 96|34| 7| 15| 67|29.99| 0.00| 50| 49| 96|33| 3| 4| |21| 0|29.97| 0.00| 54| 47| 79|18| 18| 28| 0|29.73| 0.00| 51| 50| 96|33| 7| 11| 0|30.02| 0.00| 48| 47| 97|32| 9| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |00| 0|30.04| 0.00| 48| 47| 97|29| 7| 9| 0|29.89| 0.00| 58| 48| 69|22| 19| 24| 0|30.12| 0.00| 70| 54| 56|01| 11| 13| |03| 0|30.05| 0.00| 48| 46| 95|24| 12| 16| 0|29.90| 0.00| 57| 53| 86|22| 14| 18| 0|30.15| 0.00| 64| 47| 54|08| 16| 19| |06| 60|30.09| 0.00| 49| 47| 93|24| 14| 17| 113|29.95| 0.00| 59| 55| 85|29| 14| 18| 72|30.21| 0.00| 63| 47| 56|11| 11| 17| |09| 747|30.08| 0.00| 64| 53| 69|25| 11| 18| 742|29.99| 0.00| 74| 59| 59|29| 7| 15| 717|30.24| 0.00| 74| 49| 42|13| 4| 13| |12| 932|30.04| 0.00| 72| 51| 48|25| 19| 24| 909|30.01| 0.00| 84| 55| 38|26| 15| 22| 886|30.19| 0.00| 81| 51| 36|17| 13| 20| |15| 654|29.93| 0.00| 78| 48| 35|23| 16| 27| 645|29.97| 0.00| 86| 57| 37|27| 14| 28| 596|30.13| 0.00| 83| 57| 41|17| 11| 20| |18| 51|29.92| 0.00| 71| 50| 48|22| 21| 28| 35|30.00| 0.00| 82| 55| 39|31| 14| 20| 39|30.09| 0.00| 78| 62| 58|19| 18| 25| |21| 0|29.94| 0.00| 63| 48| 58|21| 16| 27| 0|30.08| 0.00| 74| 56| 54|26| 11| 17| 0|30.11| 0.00| 71| 61| 72|21| 18| 25| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+MAXIMUM SHORT DURATION PRECIPITATION +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.04 | 0.06 | 0.07 | 0.09 | 0.10 | 0.11 | 0.13 | 0.18 | 0.21 | 0.25 | 0.28 | 0.29 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 14 | 14 | 14 | 14 | 14 | 09 | 09 | 09 | 09 | 09 | 09 | 09 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1436 | 1441 | 1444 | 1452 | 1501 | 1737 | 1714 | 1813 | 1754 | 1813 | 1827 | 1827 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ The precipitation amounts for the indicated time intervals may occur at any time during the month. The time indicated is the ending time of the interval. Date and time are not entered for trace amounts.OBSERVATIONS AT 3-HOUR INTERVALS May 2026: Blue Hill Meteorological Observatory 2 +--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 19 | MAY 20 | MAY 21 | | | | | |00| 0|30.10| 0.00| 68| 61| 78|22| 16| 20| | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |00| | | | | | | | | | | | | | | | | | | | | | | | | | | | |03| | | | | | | | | | | | | | | | | | | | | | | | | | | | |06| | | | | | | | | | | | | | | | | | | | | | | | | | | | |09| | | | | | | | | | | | | | | | | | | | | | | | | | | | |12| | | | | | | | | | | | | | | | | | | | | | | | | | | | |15| | | | | | | | | | | | | | | | | | | | | | | | | | | | |18| | | | | | | | | | | | | | | | | | | | | | | | | | | | |21| | | | | | | | | | | | | | | | | | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 31 | | | | | | | |00| | | | | | | | | | | | |03| | | | | | | | | | | | |06| | | | | | | | | | | | |09| | | | | | | | | | | | |12| | | | | | | | | | | | |15| | | | | | | | | | | | |18| | | | | | | | | | | | |21| | | | | | | | | | | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+WEATHER NOTES SUMMARY BY HOURS +--+-----------------------------+---------+ Wind Direction: Directions are those from which the wind is blowing, | | Averages | | indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant| South, 27 for West, and 00 or 36 for North. | | | | | | | | | Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind | Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+ preceding the observation. | | | | m | D | | i | D | | Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | | calculated by timing consecutive pulses from the electronic rain | | u | r | e | w | u | d | r | | gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | | | | s | s | a | P | i | S | c | S | | H| h | s | t | o | d | p | t | p | | o| i | u | u | i | i | e | i | e | | u| n | r | r | n | t | e | o | e | | r| e | e | e | t | y | d | n | d | +--+----+------+---+---+---+-----+----+----+ |00| 0|29.920| 53| 44| 73| 12.5| 25 | 5.7| |03| 0|29.909| 50| 42| 75| 11.5| 25 | 5.1| |06| 75|29.939| 50| 43| 77| 11.1| 23 | 4.8| |09| 529|29.940| 58| 45| 65| 9.9| 25 | 3.5| |12| 639|29.914| 63| 45| 54| 14.8| 24 | 7.8| |15| 439|29.878| 64| 44| 53| 15.1| 23 | 8.7| |18| 34|29.892| 60| 44| 60| 14.1| 24 | 8.3| |21| 0|29.920| 55| 44| 69| 12.2| 23 | 8.3| +--+----+------+---+---+---+-----+----+----+HOURLY PRECIPITATION (Water Equivalent)May 2026: Blue Hill Meteorological Observatory 2 ---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | D| A.M. Hour Ending at | P.M. Hour Ending at |D a| | |a t+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+t e| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |e ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- 01| | | | | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | |0.01|0.02| | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | |0.03|0.02|0.01| | | | | |0.01|06 07| | |0.03|0.08|0.04|0.07| | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | |0.01| | | | | | | |0.01|0.09|0.12|0.08| | |0.01| | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | |0.01|0.11|0.04|0.08| |0.01| | | | | |14 15| | | | | | | | | | | | | | |0.01| |0.01| | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17|0.02|0.02|0.01| | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.02|0.02|0.04|0.08|0.04|0.07|0.00|0.01|0.00|0.00|0.00|0.00|0.01|0.03|0.12|0.08|0.20|0.13|0.09|0.00|0.00|0.01|0.00|0.01|Sum ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- During a frozen precipitation event, hourly precipitation totals may not be recorded. In this case, daily amounts are typically entered in the last column (hour ending at 12 A.M.)