ST. HELENA, CALIFORNIA

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

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DAILY WEATHER AVERAGE - 28 MAY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	13.5 ^°C	19.6 ^°C	7.8 ^°C	23 ^°C (2014)	4 ^°C (2014)
Dewpoint	8.8 ^°C	11.4 ^°C	6.4 ^°C	14 ^°C (2013)	3 ^°C (2014)
Humidity	76.3 ^%	98.6 ^%	48.4 ^%		27 ^% (2011)
Barometer	1016.3 ^hPa	1017.9 ^hPa	1014.2 ^hPa	1019 ^hPa (2012)	1010.2 ^hPa (2011)
Wind Speed	11.6 ^km/h	25.1 ^km/h		29.6 ^km/h (2011)
Wind Gust		36.4 ^km/h		38.9 ^km/h (2011)
Precipitation	2.79 ^mm			4.83 ^mm (2011)

Weather Element	Average
Visibility	15 ^km
Wind Direction	WSW (248.7 °)

Weather Element	Total
Heating Degree Days	4.6 (Base 18.3)
Growing Degree Days	3.7 (Base 10)

Total Years on Record: 5

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