ST. HELENA, CALIFORNIA

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Elevation: 52 meters Latitude: 38 26N Longitude: 122 25W

WEATHER

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DAILY WEATHER AVERAGE - 1 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	11.7 ^°C	18.2 ^°C	5.8 ^°C	22 ^°C (2013)	-1 ^°C (2015)
Dewpoint	5.4 ^°C	7.8 ^°C	3 ^°C	16 ^°C (2012)	-8 ^°C (2011)
Humidity	73.3 ^%	93 ^%	47.6 ^%		16 ^% (2011)
Barometer	1021 ^hPa	1023.7 ^hPa	1018.3 ^hPa	1028.4 ^hPa (2013)	1011.5 ^hPa (2012)
Wind Speed	7.7 ^km/h	20.8 ^km/h		37 ^km/h (2011)
Wind Gust		40.1 ^km/h		50.1 ^km/h (2011)
Precipitation	9.4 ^mm			17.78 ^mm (2012)

Weather Element	Average
Visibility	13.7 ^km
Wind Direction	SE (132.1 °)

Weather Element	Total
Heating Degree Days	6.3 (Base 18.3)
Growing Degree Days	3.4 (Base 10)

Total Years on Record: 5

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