LOCAL CLIMATOLOGICAL DATA Hourly Summary April 20, 2026 Station: Blue Hill Meteorological Observatory 2 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| 33.8 | 33.5 | 33.7 | 32| 93| 0.00| 30.06| 30.04|30.050|14.1|280| 20| W| 16|278| 0 | |01| 33.9 | 33.4 | 33.6 | 31| 91| 0.00| 30.06| 30.05|30.057|12.7|278| 17| W| 14|282| 0 | |02| 33.5 | 32.7 | 33.1 | 30| 89| 0.00| 30.07| 30.05|30.054|11.7|282| 16| W| 13|284| 0 | |03| 32.8 | 32.1 | 32.4 | 29| 89| 0.00| 30.07| 30.06|30.068|12.0|275| 17| W| 14|278| 0 | | | | | | | | | | | | | | | | | | | |04| 32.2 | 31.7*| 32.0 | 29| 88| 0.00| 30.09| 30.07|30.079|13.2|275| 17| W| 15|276| 0 | |05| 32.2 | 31.7 | 31.9 | 29| 89| 0.00| 30.12| 30.09|30.103|11.1|268| 17| W| 14|274| 23 | |06| 36.2 | 32.1 | 34.0 | 30| 86| 0.00| 30.14| 30.11|30.129|10.2|274| 17| W| 12|284| 202 | |07| 40.9 | 36.2 | 38.7 | 32| 77| 0.00| 30.15| 30.14|30.147|11.0|292| 20| W| 15|299| 433 | | | | | | | | | | | | | | | | | | | |08| 44.7 | 40.9 | 43.0 | 33| 69| 0.00| 30.16| 30.15|30.150|10.3|304| 17| W| 14|297| 593 | |09| 46.9 | 44.4 | 45.6 | 32| 59| 0.00| 30.17| 30.15|30.157| 9.3|286| 17| W| 13|286| 736 | |10| 49.0 | 44.7 | 46.5 | 31| 55| 0.00| 30.16| 30.15|30.153| 0.0|286| 0| W| 0|286| 523 | |11| 46.2 | 45.3 | 45.8 | 31| 55| 0.00| 30.15| 30.14|30.146| 8.4|302| 20|WNW| 15|305| 255 | | | | | | | | | | | | | | | | | | | |12| 49.6 | 44.3 | 46.0 | 32| 58| 0.00| 30.16| 30.14|30.151|11.5|296| 26|WNW| 20|310| 553 | |13| 50.6*| 46.4 | 48.3 | 32| 52| 0.00| 30.15| 30.14|30.145|10.7|316| 21|NNW| 17|334| 453 | |14| 49.8 | 46.1 | 47.6 | 30| 51| 0.00| 30.15| 30.14|30.140|10.6|312| 24|NNW| 19|330| 454 | |15| 49.8 | 47.9 | 48.9 | 26| 41| 0.00| 30.15| 30.14|30.142|12.0|319| 22| NW| 18|315| 376 | | | | | | | | | | | | | | | | | | | |16| 49.7 | 46.1 | 47.7 | 24| 39| 0.00| 30.17| 30.15|30.159| 9.6|323| 19| NW| 14|320| 199 | |17| 46.6 | 43.7 | 45.4 | 24| 43| 0.00| 30.20| 30.17|30.180| 9.8|359| 21| N| 16|360| 78 | |18| 43.7 | 41.5 | 42.5 | 25| 50| 0.00| 30.22| 30.20|30.211| 9.8| 3| 19| N| 14| 0| 11 | |19| 41.6 | 40.7 | 41.3 | 27| 56| 0.00| 30.26| 30.22|30.243|10.1| 10| 18| N| 14| 1| 0 | | | | | | | | | | | | | | | | | | | |20| 40.7 | 39.4 | 39.8 | 23| 51| 0.00| 30.28| 30.26|30.270| 9.9| 4| 17| N| 13| 1| 0 | |21| 39.5 | 38.8 | 39.2 | 24| 55| 0.00| 30.30| 30.28|30.295| 5.6| 31| 14|NNE| 11| 30| 0 | |22| 38.8 | 37.2 | 38.1 | 25| 60| 0.00| 30.32| 30.30|30.312| 6.5| 45| 15| NE| 12| 37| 0 | |23| 37.2 | 36.2 | 36.9 | 23| 57| 0.00| 30.33| 30.32|30.324| 6.6| 34| 12| NE| 8| 37| 0 | +--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- |Total| For the day: | ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- | 0.00| 30.33| 30.04|30.161| 9.9|309| 26|WNW| 20|310| ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | Avg | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - | Hour | Hour | Avg | +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+ | 41.2 | 40.5 | 29|64.7| 0.75| 23 | 0 | ---- | -- | - | 12 | 12 | 203.7| +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+ | Total Snow, | | | | Heat 23| | Ice Pellets | Greatest Depth on Ground | Precip Types|Degree+----------+ | 0.0 | of Snow, Ice Pellets or Ice 0 | ......... | Days | Cool 0| +--------------------+-----------------------------------+-------------+------+----------+ 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.