ST. HELENA, CALIFORNIA

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

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DAILY WEATHER AVERAGE - 15 MAY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	12.9 ^°C	19.8 ^°C	7.5 ^°C	28 ^°C (2014)	5 ^°C (2013)
Dewpoint	8.6 ^°C	10.8 ^°C	6.5 ^°C	13 ^°C (2014)	4 ^°C (2014)
Humidity	78.7 ^%	100 ^%	53.5 ^%		30 ^% (2012)
Barometer	1016.6 ^hPa	1017.6 ^hPa	1015.6 ^hPa	1020.3 ^hPa (2014)	1011.5 ^hPa (2015)
Wind Speed	10.1 ^km/h	21.4 ^km/h		25.9 ^km/h (2013)
Wind Gust		30.3 ^km/h		35.2 ^km/h (2013)
Precipitation	---			--- ()

Weather Element	Average
Visibility	14.2 ^km
Wind Direction	WSW (236.3 °)

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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