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United States of America

ST. HELENA, CALIFORNIA


Home > North America > United States > California
Elevation: 170 feet     Latitude: 38 26N     Longitude: 122 25W

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DAILY WEATHER AVERAGE - SEPTEMBER 28
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[ °C ]   °F
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 60.5 °F 78.4 °F 48.2 °F 93.2 °F (2011) 41 °F (2013)
Dewpoint 52.1 °F 56.5 °F 46.8 °F 59 °F (2011) 35.6 °F (2013)
Humidity 78.9 % 100 % 41.2 % 23 % (2011)
Barometer 29.96 in 30.01 in 29.90 in 30.11 in (2013) 29.84 in (2014)
Wind Speed 4.5 mph 13.1 mph 16.1 mph (2013)
Wind Gust 17.9 mph 21.9 mph (2013)
Precipitation --- --- ()
Weather ElementAverage
Visibility7.6 mi
Wind DirectionSSW (208.3 °)
Weather ElementTotal
Heating Degree Days4 (Base 18.3)
Cooling Degree Days7.5 (Base 18.3)
Growing Degree Days13.3 (Base 10)
Total Years on Record: 5
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WIND DIRECTION BREAKOUT




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