LOCAL CLIMATOLOGICAL DATA Hourly Summary July 20, 2026 Station: Blue Hill Meteorological Observatory Latitude: 42° 12' 44" N Longitude: 71° 06' 53" W Elevation (ground): 635 ft. Time Zone: Eastern +--+------------------------+----+-----+--------------------+------------------------+------+ | | Temperature | | Pre-| Pressure | Wind |Solar | | +------+------+------+---+ Hu-|cipi-| Adj. to Sea Level +----+---+-------+-------+------+ | | M | M | | |mid-| ta- +------+------+------+ Avg|Res| Peak |2Minute| Mean | | | a | i | | D | ity| tion| | | | | +---+---+---+---+ W | | | x | n | | e | | | | | | S | | S | | S | | a | | H| i | i | M | w | M | | | | M | p | | p | | p | | t | | o| m | m | e | | e |Water| M | M | e | e | D | e | D | e | D | t | | u| u | u | a | P | a | | a | i | a | e | i | e | i | e | i | s | | r| m | m | n | t | n |Equiv| x | n | n | d | r | d | r | d | r | m² | | | | | | | | | | | | | | | | | | | | 1| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12| 13| 14| 15| 16| 17 | +--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ |00| 62.8 | 61.5 | 62.0 | 49| 62| 0.00| 29.94| 29.92|29.930| 6.9|312| 10| NW| 9|325| 0 | |01| 61.6 | 60.2 | 60.9 | 49| 65| 0.00| 29.92| 29.91|29.920| 9.5|286| 15| W| 11|294| 0 | |02| 60.4 | 59.5 | 59.9 | 49| 68| 0.00| 29.92| 29.91|29.915|11.4|293| 17|WNW| 13|295| 0 | |03| 59.5 | 58.3 | 58.9 | 49| 71| 0.00| 29.94| 29.92|29.932|10.9|285| 14| W| 12|283| 0 | | | | | | | | | | | | | | | | | | | |04| 58.4 | 57.7*| 58.0 | 49| 73| 0.00| 29.97| 29.94|29.949|10.5|284| 14| W| 11|285| 6 | |05| 59.3 | 57.8 | 58.2 | 50| 74| 0.00| 29.98| 29.96|29.975|10.4|286| 14|WNW| 11|282| 37 | |06| 64.4 | 59.3 | 61.5 | 52| 70| 0.00| 30.00| 29.98|29.986| 8.4|297| 13|WNW| 10|285| 251 | |07| 70.1 | 64.4 | 67.2 | 54| 63| 0.00| 30.01| 29.99|30.000| 5.6|309| 13| NW| 9|308| 439 | | | | | | | | | | | | | | | | | | | |08| 73.4 | 70.0 | 72.0 | 55| 56| 0.00| 30.01| 30.00|30.006| 3.4|290| 7| W| 5|275| 608 | |09| 77.0 | 73.3 | 75.3 | 54| 48| 0.00| 30.01| 30.00|30.004| 3.6|283| 9| NW| 7|301| 735 | |10| 78.8 | 76.9 | 77.9 | 52| 41| 0.00| 30.02| 30.01|30.013| 6.5|248| 14| SW| 10|224| 800 | |11| 80.3 | 78.7 | 79.1 | 51| 38| 0.00| 30.01| 30.00|30.008| 8.1|243| 17|WSW| 13|248| 884 | | | | | | | | | | | | | | | | | | | |12| 81.0 | 79.8 | 80.3 | 51| 37| 0.00| 30.01| 29.99|30.001| 8.4|228| 18| SW| 13|226| 894 | |13| 81.7 | 80.5 | 81.2 | 51| 35| 0.00| 30.00| 29.99|29.994| 8.1|233| 18|SSE| 14|260| 836 | |14| 82.8*| 81.0 | 81.6 | 53| 37| 0.00| 30.00| 29.98|29.986| 7.6|236| 19|SSW| 13|223| 754 | |15| 82.5 | 80.2 | 81.2 | 54| 39| 0.00| 29.98| 29.97|29.976| 9.5|221| 18|WSW| 14|262| 586 | | | | | | | | | | | | | | | | | | | |16| 80.6 | 77.5 | 79.3 | 55| 43| 0.00| 29.98| 29.97|29.969|11.4|186| 24| S| 16|179| 404 | |17| 77.8 | 74.6 | 76.5 | 54| 46| 0.00| 29.98| 29.97|29.975|12.0|192| 23| S| 16|191| 201 | |18| 74.7 | 70.8 | 72.5 | 53| 50| 0.00| 29.98| 29.98|29.981|12.1|181| 24|SSE| 16|186| 26 | |19| 70.8 | 68.1 | 69.4 | 53| 56| 0.00| 30.00| 29.98|29.990|10.8|182| 24| S| 15|190| 2 | | | | | | | | | | | | | | | | | | | |20| 68.1 | 66.1 | 67.0 | 55| 65| 0.00| 30.02| 30.00|30.012|10.2|180| 18| S| 13|185| 0 | |21| 66.1 | 64.7 | 65.4 | 56| 73| 0.00| 30.02| 30.01|30.013|11.0|185| 20| S| 13|188| 0 | |22| 64.7 | 63.7 | 64.2 | 57| 77| 0.00| 30.01| 30.00|30.009|11.1|195| 20| S| 13|194| 0 | |23| 63.7 | 62.5 | 63.0 | 58| 83| 0.00| 30.01| 29.99|30.001|12.3|189| 21| S| 15|185| 0 | +--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- |Total| For the day: | ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- | 0.00| 30.02| 29.91|29.981| 9.2|234| 24| S| 16|179| ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | Avg | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - | Hour | Hour | Avg | +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+ | 70.3 | 69.7 | 53|57.1| 2.24| 20+ | 2 | ---- | -- | - | 16+ | 16 | 310.9| +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+ | Total Snow, | | | | Heat 0| | Ice Pellets | Greatest Depth on Ground | Precip Types|Degree+----------+ | 0.0 | of Snow, Ice Pellets or Ice 0 | ......... | Days | Cool 6| +--------------------+-----------------------------------+-------------+------+----------+ NOTES: Data in columns 4, 5, 6, 10, 11, 17 are means via continuous observations for each hour. Units: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for each hour. Column 12: Resultant wind is calculated by the vector sum of continuous wind observations. Precipitation types: 1 FOG, 2 HEAVY FOG, 3 THUNDER, 4 ICE PELLETS, 5 HAIL, 6 GLAZE, 7 DUSTSTORM, 8 SMOKE/HAZE, 9 BLOWING SNOW. Degree Days heating base is 65°F, cooling base is 65°F.