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HERNDON, VIRGINIA


Home > North America > United States > Virginia
Elevation: 98 meters     Latitude: 38 57N     Longitude: 077 27W

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Number of Records: 213,900;   Date Range: 1/1/95 - 3/22/16
 
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WEATHER ALMANAC - 29 AUGUST, 2015
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[ °F ]   °C
Weather ElementAverageHighLow
Temperature24 °C30 °C (4:52 pm)17.8 °C (4:52 am)
Dewpoint16.6 °C17.8 °C (4:52 pm)15 °C (3:52 am)
Humidity64.6 %84 % (4:52 am)48 % (1:52 pm)
Barometer1021.3 hPa1023 hPa (7:52 am)1019 hPa (5:52 pm)
Wind Speed9.7 km/h14.8 km/h (9:52 am)
Weather ElementAverage
Visibility16.1 km
Wind DirectionSSE (147.9 °)

Weather ElementTotal
Precipitation---
Cooling Degree Days5.6 (Base 18.3)
Growing Degree Days13.9 (Base 10)
Averaged from 24 records on 29 August, 2015
WEATHER CONDITIONS BREAKOUT
WIND DIRECTION BREAKOUT
WEATHER BY HOUR - 29 AUGUST, 2015
[ °F ]   °C
Local TimeTemperatureDewpointHumidityBarometerVisibilityWind DirectionWind SpeedGust SpeedPrecipitationEventsConditions
12:52 AM21.1 °C16.1 °C73 %1022.7 hPa16.1 kmSouth (180°)5.6 km/hMostly Cloudy
1:52 AM20 °C16.1 °C78 %1022.7 hPa16.1 kmSSW (210°)5.6 km/hMostly Cloudy
2:52 AM19.4 °C16.1 °C81 %1022.4 hPa16.1 kmCalmPartly Cloudy
3:52 AM18.3 °C15 °C81 %1022.4 hPa16.1 kmCalmPartly Cloudy
4:52 AM17.8 °C15 °C84 %1022 hPa16.1 kmSSE (150°)9.3 km/hScattered Clouds
5:52 AM18.3 °C15 °C81 %1022 hPa16.1 kmSSE (160°)9.3 km/hScattered Clouds
6:52 AM18.3 °C15 °C81 %1022.4 hPa16.1 kmSouth (180°)9.3 km/hScattered Clouds
7:52 AM19.4 °C15.6 °C79 %1023 hPa16.1 kmSouth (180°)7.4 km/hScattered Clouds
8:52 AM21.7 °C15.6 °C68 %1023 hPa16.1 kmSSW (200°)13 km/hScattered Clouds
9:52 AM23.9 °C16.7 °C64 %1023 hPa16.1 kmSouth (190°)14.8 km/hScattered Clouds
10:52 AM25 °C16.7 °C60 %1023 hPa16.1 kmSSW (200°)13 km/hScattered Clouds
11:52 AM27.2 °C16.7 °C52 %1022.7 hPa16.1 kmSW (230°)11.1 km/hScattered Clouds
12:52 PM28.3 °C16.7 °C49 %1021.7 hPa16.1 kmVariable11.1 km/hScattered Clouds
1:52 PM29.4 °C17.2 °C48 %1021 hPa16.1 kmVariable5.6 km/hMostly Cloudy
2:52 PM28.9 °C17.2 °C49 %1020.3 hPa16.1 kmWSW (250°)9.3 km/hMostly Cloudy
3:52 PM29.4 °C17.2 °C48 %1019.6 hPa16.1 kmVariable11.1 km/hMostly Cloudy
4:52 PM30 °C17.8 °C48 %1019.3 hPa16.1 kmSSW (210°)14.8 km/hMostly Cloudy
5:52 PM29.4 °C17.2 °C48 %1019 hPa16.1 kmSSE (160°)13 km/hMostly Cloudy
6:52 PM27.8 °C17.2 °C52 %1019 hPa16.1 kmSSW (200°)13 km/hMostly Cloudy
7:52 PM26.1 °C17.2 °C58 %1019 hPa16.1 kmSouth (180°)11.1 km/hMostly Cloudy
8:52 PM25.6 °C17.2 °C60 %1019.3 hPa16.1 kmSSE (160°)9.3 km/hMostly Cloudy
9:52 PM24.4 °C17.8 °C67 %1019.6 hPa16.1 kmSouth (170°)11.1 km/hScattered Clouds
10:52 PM23.9 °C17.8 °C69 %1020 hPa16.1 kmSouth (170°)11.1 km/hMostly Cloudy
11:52 PM22.8 °C17.8 °C73 %1020 hPa16.1 kmSouth (170°)13 km/hPartly Cloudy
Hourly data recorded from KIAD, located 0 kilometers away from Herndon, Virginia




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