LOCAL CLIMATOLOGICAL DATA Hourly Summary September 22, 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| 54.0 | 53.5 | 53.6 | 50| 88| 0.00| 30.26| 30.25|30.256| 9.0| 15| 14|NNE| 11| 18| 0 | |01| 53.8 | 53.5 | 53.6 | 49| 85| 0.00| 30.27| 30.26|30.261| 9.7| 27| 17| N| 12| 32| 0 | |02| 53.7 | 53.4 | 53.5 | 48| 82| 0.00| 30.28| 30.27|30.274|10.4| 30| 19| NE| 12| 29| 0 | |03| 54.0 | 53.6 | 53.7 | 48| 82| 0.00| 30.30| 30.27|30.280|10.2| 36| 18|NNE| 14| 28| 0 | | | | | | | | | | | | | | | | | | | |04| 55.6 | 54.0 | 54.9 | 50| 85| 0.00| 30.31| 30.29|30.296|10.2| 43| 24| NE| 17| 51| 0 | |05| 55.6 | 55.3 | 55.4 | 50| 83| 0.00| 30.32| 30.30|30.312|14.2| 57| 28|ENE| 19| 53| 0 | |06| 55.3 | 55.1 | 55.3 | 50| 81| 0.00| 30.36| 30.32|30.341|14.7| 64| 32| NE| 20| 67| 17 | |07| 56.1 | 54.9 | 55.3 | 50| 82| 0.00| 30.37| 30.35|30.360|14.5| 61| 28|ENE| 19| 62| 98 | | | | | | | | | | | | | | | | | | | |08| 56.3 | 55.2 | 55.8 | 50| 81| 0.00| 30.39| 30.37|30.381|15.2| 58| 28|ENE| 19| 57| 185 | |09| 58.7 | 56.3 | 57.5 | 50| 77| 0.00| 30.39| 30.38|30.387|16.5| 63| 27|ENE| 20| 73| 444 | |10| 59.2 | 57.5 | 58.5 | 50| 75| 0.00| 30.41| 30.39|30.399|16.5| 64| 30|ENE| 21| 67| 709 | |11| 59.6 | 57.9 | 59.0 | 50| 73| 0.00| 30.41| 30.40|30.407|16.9| 66| 29| E| 21| 64| 706 | | | | | | | | | | | | | | | | | | | |12| 60.4*| 59.2 | 59.7 | 50| 71| 0.00| 30.42| 30.41|30.412|15.3| 72| 26| NE| 20| 72| 753 | |13| 59.6 | 59.2 | 59.4 | 51| 72| 0.00| 30.42| 30.40|30.411|13.5| 70| 24|ENE| 17| 66| 678 | |14| 59.6 | 58.6 | 58.9 | 48| 67| 0.00| 30.41| 30.40|30.407|14.4| 70| 26|ENE| 19| 72| 518 | |15| 58.7 | 56.8 | 57.8 | 44| 61| 0.00| 30.41| 30.40|30.407|15.2| 72| 28| NE| 20| 71| 338 | | | | | | | | | | | | | | | | | | | |16| 56.9 | 55.7 | 56.2 | 44| 64| 0.00| 30.43| 30.41|30.417|10.9| 76| 21|ENE| 16| 82| 125 | |17| 55.7 | 53.2 | 54.3 | 43| 66| 0.00| 30.43| 30.43|30.430|10.8| 70| 20|ENE| 14| 70| 20 | |18| 53.3 | 52.5*| 52.9 | 44| 71| 0.00| 30.45| 30.42|30.432|10.7| 77| 18|ENE| 13| 75| 0 | |19| 53.2 | 52.5 | 52.8 | 44| 72| 0.00| 30.46| 30.44|30.452|11.8| 73| 21|ENE| 15| 70| 0 | | | | | | | | | | | | | | | | | | | |20| 53.4 | 52.9 | 53.1 | 44| 72| 0.00| 30.46| 30.45|30.458|12.8| 78| 23| E| 16| 83| 0 | |21| 53.8 | 53.4 | 53.7 | 45| 72| 0.00| 30.46| 30.45|30.453|13.6| 79| 24|ENE| 17| 82| 0 | |22| 53.8 | 53.5 | 53.6 | 46| 75| 0.00| 30.46| 30.45|30.457|12.4| 79| 24| E| 15| 82| 0 | |23| 53.8 | 53.5 | 53.6 | 47| 77| 0.00| 30.48| 30.46|30.469|12.2| 80| 21| E| 15| 77| 0 | +--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- |Total| For the day: | ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- | 0.00| 30.48| 30.25|30.382|13.0| 63| 32| NE| 21| 67| ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | Avg | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - | Hour | Hour | Avg | +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+ | 56.5 | 55.5 | 48|75.6| 2.15| 23 | 0 | ---- | -- | - | 6 | 10 | 191.3| +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+ | Total Snow, | | | | Heat 8| | 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.