ST. HELENA, CALIFORNIA

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

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DAILY WEATHER AVERAGE - 25 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	15.5 ^°C	24 ^°C	4.8 ^°C	30 ^°C (2015)	(2013)
Dewpoint	10.9 ^°C	13.6 ^°C	9.5 ^°C	18 ^°C (2011)	6 ^°C (2015)
Humidity	77.8 ^%	97.4 ^%	42.8 ^%		23 ^% (2012)
Barometer	1011.2 ^hPa	1015.6 ^hPa	1012.9 ^hPa	1017.6 ^hPa (2011)	1011.2 ^hPa (2012)
Wind Speed	9.5 ^km/h	25.9 ^km/h		38.9 ^km/h (2013)
Wind Gust		35.6 ^km/h		50.1 ^km/h (2013)
Precipitation	11.43 ^mm			11.43 ^mm (2014)

Weather Element	Average
Visibility	14.3 ^km
Wind Direction	SW (224.8 °)

Total Years on Record: 5

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