ST. HELENA, CALIFORNIA

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

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DAILY WEATHER AVERAGE - 26 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	6 ^°C	13.5 ^°C	0 ^°C	18 ^°C (2013)	-2 ^°C (2013)
Dewpoint	2.9 ^°C	6.3 ^°C	-0.5 ^°C	11 ^°C (2011)	-4 ^°C (2015)
Humidity	84 ^%	100 ^%	56.3 ^%		33 ^% (2011)
Barometer	1024.4 ^hPa	1026.8 ^hPa	1022 ^hPa	1032.2 ^hPa (2015)	1011.5 ^hPa (2012)
Wind Speed	5.6 ^km/h	18 ^km/h		25.9 ^km/h (2012)
Wind Gust		33.5 ^km/h		38.9 ^km/h (2012)
Precipitation	4.32 ^mm			4.32 ^mm (2012)

Weather Element	Average
Visibility	12.9 ^km
Wind Direction	ESE (127.6 °)

Weather Element	Total
Heating Degree Days	11.6 (Base 18.3)

Total Years on Record: 4

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