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United States of America

ST. HELENA, CALIFORNIA


Home > North America > United States > California
Elevation: 52 meters     Latitude: 38 26N     Longitude: 122 25W

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DAILY WEATHER AVERAGE - 28 AUGUST
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[ °F ]   °C
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 18.2 °C 29.7 °C 11 °C 35 °C (2015) 8 °C (2012)
Dewpoint 11.8 °C 15 °C 9 °C 17 °C (2015) 8 °C (2015)
Humidity 71.9 % 98 % 32.3 % 20 % (2012)
Barometer 1013.9 hPa 1015.6 hPa 1012.2 hPa 1017.3 hPa (2012) 1011.2 hPa (2015)
Wind Speed 8.5 km/h 25.3 km/h 31.5 km/h (2015)
Wind Gust 34.6 km/h 40.7 km/h (2015)
Precipitation --- --- ()
Weather ElementAverage
Visibility13.8 km
Wind DirectionSSW (218.3 °)
Weather ElementTotal
Heating Degree Days0.3 (Base 18.3)
Cooling Degree Days6.7 (Base 18.3)
Growing Degree Days10.3 (Base 10)
Total Years on Record: 3
WEATHER CONDITIONS BREAKOUT
WIND DIRECTION BREAKOUT




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