ST. HELENA, CALIFORNIA

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

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DAILY WEATHER AVERAGE - 27 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	5.2 ^°C	12.3 ^°C	-0.5 ^°C	15 ^°C (2011)	-3 ^°C (2015)
Dewpoint	2.7 ^°C	6.5 ^°C	-0.5 ^°C	15 ^°C (2011)	-3 ^°C (2013)
Humidity	86.4 ^%	100 ^%	62.8 ^%		39 ^% (2011)
Barometer	1024.4 ^hPa	1026.4 ^hPa	1022 ^hPa	1029.5 ^hPa (2011)	1019.6 ^hPa (2012)
Wind Speed	3.4 ^km/h	13.8 ^km/h		18.5 ^km/h (2011)
Precipitation	---			--- ()

Weather Element	Average
Visibility	14.8 ^km
Wind Direction	ESE (104.9 °)

Weather Element	Total
Heating Degree Days	12.4 (Base 18.3)

Total Years on Record: 4

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