HELENA - AIRPORT, MONTANA

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Elevation: 1190 meters Latitude: 46 35N Longitude: 111 55W

WEATHER

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DAILY WEATHER AVERAGE - 22 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	12 ^°C	20.2 ^°C	4.8 ^°C	30 ^°C (2011)	-3.9 ^°C (1995)
Dewpoint	1.4 ^°C	4.3 ^°C	-1.2 ^°C	11.1 ^°C (2007)	-8.3 ^°C (2011)
Humidity	53.4 ^%	78.7 ^%	30.5 ^%		11 ^% (2011)
Barometer	1017.9 ^hPa	1021.7 ^hPa	1014.6 ^hPa	1031.5 ^hPa (2009)	1002 ^hPa (2013)
Wind Speed	10.1 ^km/h	25.1 ^km/h		42.6 ^km/h (2008)
Wind Gust		47.5 ^km/h		66.6 ^km/h (2008)
Precipitation	1.78 ^mm			3.81 ^mm (2007)

Weather Element	Average
Visibility	15.8 ^km
Wind Direction	SSE (154.2 °)

Weather Element	Total
Heating Degree Days	5.8 (Base 18.3)
Growing Degree Days	4.6 (Base 10)

Total Years on Record: 20

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