LOCAL CLIMATOLOGICAL DATA Hourly Summary March 18, 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| 24.5 | 23.7 | 24.1 | 8| 49| 0.00| 30.15| 30.11|30.128|19.3|294| 35|WNW| 27|292| 0 | |01| 23.8 | 22.9 | 23.4 | 8| 52| 0.00| 30.18| 30.15|30.161|16.1|295| 29|WNW| 23|291| 0 | |02| 22.9 | 22.0 | 22.5 | 9| 56| 0.00| 30.21| 30.18|30.192|12.2|294| 24|WNW| 17|291| 0 | |03| 22.2 | 21.5 | 21.8 | 10| 59| 0.00| 30.24| 30.21|30.224|12.0|293| 22| NW| 17|300| 0 | | | | | | | | | | | | | | | | | | | |04| 21.8 | 21.1 | 21.5 | 9| 59| 0.00| 30.28| 30.24|30.255|11.4|300| 19| W| 15|304| 0 | |05| 21.2 | 20.2*| 20.7 | 10| 62| 0.00| 30.31| 30.28|30.294| 9.0|300| 15|WNW| 12|302| 1 | |06| 21.9 | 20.3 | 20.9 | 10| 62| 0.00| 30.34| 30.31|30.328| 7.8|283| 14| W| 10|284| 32 | |07| 25.2 | 21.9 | 24.0 | 10| 55| 0.00| 30.40| 30.34|30.363| 8.3|293| 17| W| 14|274| 271 | | | | | | | | | | | | | | | | | | | |08| 27.0 | 25.2 | 26.4 | 10| 49| 0.00| 30.42| 30.39|30.405| 9.9|282| 20| W| 15|283| 441 | |09| 29.5 | 26.9 | 28.4 | 9| 44| 0.00| 30.43| 30.41|30.419|11.4|295| 23|NNW| 16|314| 528 | |10| 31.8 | 29.0 | 30.4 | 9| 40| 0.00| 30.43| 30.40|30.422|11.0|299| 21| NW| 15|297| 621 | |11| 32.3 | 30.6 | 31.3 | 7| 36| 0.00| 30.41| 30.38|30.389| 8.7|313| 18| NW| 13|309| 558 | | | | | | | | | | | | | | | | | | | |12| 32.0 | 30.9 | 31.5 | 6| 34| 0.00| 30.40| 30.38|30.386| 5.8|337| 16| NW| 11|339| 457 | |13| 33.0 | 31.1 | 32.0 | 6| 33| 0.00| 30.39| 30.38|30.383| 3.9|293| 11|WNW| 9|297| 487 | |14| 33.5 | 32.4 | 32.8 | 7| 33| 0.00| 30.41| 30.39|30.400| 5.6|192| 12|SSW| 10|222| 388 | |15| 34.6 | 32.9 | 33.5 | 8| 33| 0.00| 30.42| 30.40|30.412| 7.3|184| 21| S| 13|191| 327 | | | | | | | | | | | | | | | | | | | |16| 34.8*| 32.9 | 34.1 | 8| 33| 0.00| 30.42| 30.41|30.420| 8.0|190| 17| SW| 12|214| 195 | |17| 32.9 | 29.5 | 31.8 | 9| 38| 0.00| 30.43| 30.42|30.420| 6.4|173| 14| SE| 11|127| 33 | |18| 29.5 | 28.1 | 28.5 | 14| 54| 0.00| 30.43| 30.41|30.420| 8.8|160| 17| S| 12|178| 0 | |19| 28.3 | 26.9 | 27.6 | 14| 56| 0.00| 30.44| 30.42|30.435| 8.4|174| 17| S| 12|176| 0 | | | | | | | | | | | | | | | | | | | |20| 26.9 | 26.1 | 26.4 | 15| 61| 0.00| 30.45| 30.44|30.443| 9.4|168| 18| S| 12|164| 0 | |21| 26.1 | 25.3 | 25.6 | 15| 64| 0.00| 30.45| 30.44|30.445| 8.7|172| 16| S| 11|178| 0 | |22| 25.3 | 24.3 | 24.8 | 15| 67| 0.00| 30.44| 30.44|30.440| 8.2|173| 13| S| 10|180| 0 | |23| 24.4 | 23.6 | 24.1 | 15| 69| 0.00| 30.44| 30.42|30.429| 7.8|177| 12| S| 10|187| 0 | +--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- |Total| For the day: | ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- | 0.00| 30.45| 30.11|30.359| 9.4|264| 35|WNW| 27|292| ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | Avg | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - | Hour | Hour | Avg | +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+ | 27.5 | 27.0 | 10|49.9|49.29| 21 | 0 | ---- | -- | - | 0 | 0 | 180.8| +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+ | Total Snow, | | | | Heat 37| | 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.