LOCAL CLIMATOLOGICAL DATA Hourly Summary September 19, 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| 58.8 | 57.8 | 58.3 | 44| 60| 0.00| 30.16| 30.15|30.156| 9.3| 5| 17| N| 13| 13| 0 | |01| 57.8 | 56.9 | 57.4 | 44| 61| 0.00| 30.17| 30.16|30.162| 7.4| 5| 14| N| 10|352| 0 | |02| 56.9 | 55.0 | 56.1 | 45| 66| 0.00| 30.17| 30.17|30.169| 7.0|357| 13| N| 10|356| 0 | |03| 55.0 | 52.5 | 53.8 | 44| 69| 0.00| 30.18| 30.17|30.175| 8.0| 8| 14| N| 11| 10| 0 | | | | | | | | | | | | | | | | | | | |04| 52.6 | 51.3 | 51.9 | 43| 72| 0.00| 30.19| 30.17|30.183| 8.4| 20| 13| N| 10| 27| 0 | |05| 51.4 | 51.1 | 51.3 | 43| 74| 0.00| 30.22| 30.18|30.201| 8.5| 28| 13| N| 10| 24| 5 | |06| 54.1 | 51.0*| 51.8 | 44| 74| 0.00| 30.23| 30.21|30.225| 6.6| 29| 12|NNE| 9| 29| 79 | |07| 59.1 | 54.1 | 57.1 | 45| 64| 0.00| 30.25| 30.23|30.240| 6.4| 45| 16|ENE| 11| 55| 332 | | | | | | | | | | | | | | | | | | | |08| 61.1 | 58.8 | 59.8 | 46| 60| 0.00| 30.25| 30.24|30.243| 8.1| 66| 17|ENE| 13| 75| 514 | |09| 62.0 | 60.8 | 61.2 | 47| 59| 0.00| 30.26| 30.25|30.252| 7.9| 69| 15| E| 11| 58| 616 | |10| 62.5 | 61.1 | 61.9 | 46| 56| 0.00| 30.26| 30.24|30.248| 8.9| 79| 17|ENE| 13| 72| 717 | |11| 63.2 | 60.6 | 62.1 | 46| 55| 0.00| 30.25| 30.23|30.236| 6.6| 80| 17| E| 11|100| 760 | | | | | | | | | | | | | | | | | | | |12| 62.6 | 61.4 | 62.2 | 47| 57| 0.00| 30.24| 30.22|30.229| 5.9| 77| 13|ENE| 10| 92| 580 | |13| 63.1 | 61.8 | 62.5 | 47| 57| 0.00| 30.22| 30.21|30.218| 6.4| 81| 15|ENE| 11| 84| 564 | |14| 63.9*| 62.1 | 62.8 | 47| 57| 0.00| 30.22| 30.21|30.214| 5.8| 88| 12|ESE| 10| 95| 441 | |15| 62.4 | 60.1 | 61.2 | 48| 61| 0.00| 30.21| 30.20|30.207| 6.1| 87| 11| E| 9| 89| 203 | | | | | | | | | | | | | | | | | | | |16| 60.1 | 57.8 | 58.9 | 48| 66| 0.00| 30.22| 30.21|30.212| 8.4| 94| 12| E| 11|100| 68 | |17| 57.9 | 55.5 | 56.6 | 47| 70| 0.00| 30.22| 30.21|30.215| 8.0|118| 12| E| 11|103| 12 | |18| 55.6 | 54.0 | 54.7 | 46| 74| 0.00| 30.23| 30.22|30.222| 7.7|136| 14| SE| 11|139| 0 | |19| 54.0 | 52.6 | 53.3 | 46| 76| 0.00| 30.24| 30.23|30.234| 7.9|145| 11| SE| 9|149| 0 | | | | | | | | | | | | | | | | | | | |20| 52.7 | 51.9 | 52.3 | 46| 79| 0.00| 30.24| 30.23|30.233| 8.2|156| 12| SE| 10|151| 0 | |21| 52.7 | 52.0 | 52.3 | 45| 77| 0.00| 30.24| 30.23|30.237| 8.4|158| 14|SSE| 10|153| 0 | |22| 52.8 | 52.3 | 52.5 | 45| 75| 0.00| 30.24| 30.23|30.235| 7.6|157| 12|SSE| 10|157| 0 | |23| 53.1 | 52.7 | 52.9 | 45| 73| 0.00| 30.24| 30.23|30.232| 6.8|164| 11|SSE| 9|161| 0 | +--+------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- |Total| For the day: | ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | ---- | ---- | ---- | - | -- | 0.00| 30.26| 30.15|30.216| 7.5| 78| 17| N| 13| 13| ---- | +------+------+------+---+----+-----+------+------+------+----+---+---+---+---+---+------+ | Avg | Mean |Avg| Avg|Month| Hour | Hour | ---- | -- | - | Hour | Hour | Avg | +-------------+------+---+----+-----+------+------+------+----+---+-------+-------+------+ | 57.5 | 56.9 | 46|66.4| 1.95| 9+ | 0 | ---- | -- | - | 0+ | 0 | 203.9| +-------------+------+---+----+-----+------+------+------+----+---+----+--+---+---+------+ | Total Snow, | | | | Heat 7| | 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.