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ST. HELENA, CALIFORNIA


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

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Number of Records: 110,348;   Date Range: 4/19/11 - 3/22/16
 
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WEATHER ALMANAC - 25 AUGUST, 2015
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[ °F ]   °C
Weather ElementAverageHighLow
Temperature18.2 °C27 °C (1:55 pm) (2:35 pm)
Dewpoint12.3 °C14 °C (9:55 pm) (7:00 pm)
Humidity70.7 %100 % (9:55 pm)42 % (1:55 pm)
Barometer1015.6 hPa1017.6 hPa (10:15 am)1014.6 hPa (5:15 pm)
Wind Speed15.6 km/h25.9 km/h (4:15 pm)
Wind Gust31.5 km/h (5:55 pm)
Weather ElementAverage
Visibility15.4 km
Wind DirectionWNW (280.2 °)

Weather ElementTotal
Precipitation2.03 mm
Heating Degree Days13.7 (Base 18.3)
Averaged from 42 records on 25 August, 2015
WEATHER CONDITIONS BREAKOUT
WIND DIRECTION BREAKOUT
WEATHER BY HOUR - 25 AUGUST, 2015
[ °F ]   °C
Local TimeTemperatureDewpointHumidityBarometerVisibilityWind DirectionWind SpeedGust SpeedPrecipitationEventsConditions
10:15 AM17 °C13 °C77 %1017.6 hPa14.5 kmWest (270°)11.1 km/hOvercast
10:35 AM17 °C13 °C77 %1017.3 hPa14.5 kmWest (270°)18.5 km/hOvercast
10:55 AM18 °C13 °C73 %1017.3 hPa14.5 kmWest (270°)14.8 km/hScattered Clouds
11:15 AM18 °C13 °C73 %1016.9 hPa16.1 kmWest (280°)13 km/hClear
11:35 AM20 °C13 °C64 %1016.9 hPa16.1 kmWest (270°)9.3 km/hClear
11:55 AM21 °C13 °C60 %1016.6 hPa16.1 kmWNW (300°)13 km/hClear
12:15 PM22 °C13 °C57 %1016.6 hPa16.1 kmWSW (240°)13 km/hClear
12:35 PM22 °C13 °C57 %1016.3 hPa16.1 kmWSW (250°)11.1 km/hClear
12:55 PM24 °C13 °C50 %1015.9 hPa16.1 kmWest (260°)13 km/hClear
1:15 PM24 °C13 °C50 %1015.6 hPa16.1 kmWest (280°)16.7 km/hClear
1:35 PM25 °C13 °C47 %1015.6 hPa11.3 kmWNW (290°)16.7 km/hClear
1:55 PM27 °C13 °C42 %1015.2 hPa2.4 kmWest (270°)14.8 km/h25.9 km/h
2:15 PM26 °C13 °C44 %1015.2 hPaWNW (290°)13 km/h25.9 km/h2.03 mmClear
2:35 PM-17.8 °C-17.8 °CNorth
2:55 PM25 °C13 °C47 %1015.2 hPa16.1 kmWNW (290°)22.2 km/h
3:15 PM25 °C13 °C47 %1015.2 hPa16.1 kmWest (280°)22.2 km/h27.8 km/hClear
3:35 PM24 °C13 °C50 %1015.2 hPa16.1 kmWest (280°)22.2 km/hClear
3:55 PM23 °C13 °C53 %1014.9 hPa16.1 kmWest (280°)22.2 km/hClear
4:15 PM23 °C13 °C53 %1014.9 hPa16.1 kmWest (280°)25.9 km/hClear
4:35 PM22 °C13 °C57 %1014.9 hPa16.1 kmWest (270°)24.1 km/h29.6 km/hClear
4:55 PM22 °C13 °C57 %1014.9 hPa16.1 kmWest (280°)20.4 km/h29.6 km/hClear
5:15 PM22 °C13 °C57 %1014.6 hPa16.1 kmWest (280°)18.5 km/hClear
5:35 PM21 °C13 °C60 %1014.6 hPa16.1 kmWNW (300°)18.5 km/hClear
5:55 PM20 °C13 °C64 %1014.6 hPa16.1 kmWNW (300°)18.5 km/h31.5 km/hClear
6:15 PM19 °C13 °C68 %1014.6 hPa16.1 kmWest (280°)24.1 km/h29.6 km/hClear
6:35 PM19 °C13 °C68 %1014.6 hPa16.1 kmWNW (300°)22.2 km/h29.6 km/hClear
6:55 PM18 °C13 °C73 %1014.6 hPa16.1 kmWNW (300°)16.7 km/hClear
7:15 PM17 °C13 °C77 %1014.9 hPa16.1 kmWNW (300°)14.8 km/h29.6 km/hClear
7:35 PM15 °C13 °C88 %1014.9 hPa16.1 kmWNW (300°)18.5 km/hClear
7:55 PM15 °C13 °C88 %1014.9 hPa16.1 kmWNW (300°)11.1 km/hClear
8:15 PM14 °C13 °C94 %1015.2 hPa16.1 kmNW (310°)11.1 km/hMostly Cloudy
8:35 PM14 °C13 °C94 %1015.2 hPa14.5 kmWNW (300°)16.7 km/h27.8 km/hOvercast
8:55 PM15 °C13 °C88 %1015.6 hPa16.1 kmWNW (300°)13 km/hOvercast
9:15 PM14 °C13 °C94 %1015.6 hPa14.5 kmWNW (300°)11.1 km/hOvercast
9:35 PM15 °C13 °C88 %1015.6 hPa16.1 kmNW (310°)9.3 km/hOvercast
9:55 PM14 °C14 °C100 %1015.6 hPa16.1 kmNW (310°)9.3 km/hOvercast
10:15 PM14 °C13 °C94 %1015.6 hPa16.1 kmNW (320°)5.6 km/hOvercast
10:35 PM14 °C13 °C94 %1015.9 hPa16.1 kmWest (260°)16.7 km/hOvercast
10:55 PM14 °C13 °C94 %1015.9 hPa16.1 kmNW (320°)7.4 km/hOvercast
11:15 PM14 °C13 °C94 %1015.9 hPa16.1 kmWNW (300°)11.1 km/hOvercast
11:35 PM14 °C13 °C94 %1015.9 hPa16.1 kmWNW (290°)14.8 km/hOvercast
11:55 PM14 °C13 °C94 %1015.9 hPa16.1 kmWNW (290°)13 km/hOvercast
Hourly data recorded from KO69, located 0 kilometers away from St. Helena, California




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