ST. HELENA, CALIFORNIA

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

WEATHER

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DAILY WEATHER AVERAGE - 24 APRIL

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	12.8 ^°C	17.5 ^°C	9.8 ^°C	19 ^°C (2012)	7 ^°C (2013)
Dewpoint	9.9 ^°C	12.5 ^°C	7.5 ^°C	14 ^°C (2012)	4 ^°C (2015)
Humidity	84 ^%	98.5 ^%	60.5 ^%		48 ^% (2011)
Barometer	1015.6 ^hPa	1018.3 ^hPa	1013.2 ^hPa	1021.7 ^hPa (2011)	1011.5 ^hPa (2013)
Wind Speed	12.1 ^km/h	30.1 ^km/h		42.6 ^km/h (2015)
Wind Gust		41.2 ^km/h		57.5 ^km/h (2015)
Precipitation	9.91 ^mm			17.27 ^mm (2015)

Weather Element	Average
Visibility	13.8 ^km
Wind Direction	SW (227.4 °)

Weather Element	Total
Heating Degree Days	4.7 (Base 18.3)
Growing Degree Days	3.6 (Base 10)

Total Years on Record: 4

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