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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 JULY, 2015
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[ °F ]   °C
Weather ElementAverageHighLow
Temperature25.1 °C30 °C (2:52 pm)21 °C (5:14 am)
Dewpoint22.2 °C23.9 °C (3:52 pm)20.6 °C (3:52 am)
Humidity84.8 %100 % (5:14 am)67 % (2:52 pm)
Barometer1015.6 hPa1016.9 hPa (8:40 am)1013.5 hPa (5:52 pm)
Wind Speed6.6 km/h16.7 km/h (12:30 pm)
Wind Gust25.9 km/h (4:52 pm)
Weather ElementAverage
Visibility12.2 km
Wind DirectionESE (101.2 °)

Weather ElementTotal
Precipitation---
Cooling Degree Days7.2 (Base 18.3)
Growing Degree Days15.5 (Base 10)
Averaged from 34 records on 29 July, 2015
WEATHER CONDITIONS BREAKOUT
WIND DIRECTION BREAKOUT
WEATHER BY HOUR - 29 JULY, 2015
[ °F ]   °C
Local TimeTemperatureDewpointHumidityBarometerVisibilityWind DirectionWind SpeedGust SpeedPrecipitationEventsConditions
12:52 AM21.7 °C21.1 °C96 %1015.9 hPa14.5 kmCalmClear
1:52 AM22.2 °C21.7 °C97 %1015.6 hPa12.9 kmCalmClear
2:52 AM21.7 °C21.1 °C96 %1015.6 hPa12.9 kmCalmClear
3:52 AM21.1 °C20.6 °C97 %1015.2 hPa12.9 kmCalmMostly Cloudy
4:18 AM22 °C21 °C94 %1015.6 hPa9.7 kmCalmMostly Cloudy
4:44 AM22 °C21 °C94 %1015.6 hPa11.3 kmCalmScattered Clouds
4:52 AM21.7 °C21.1 °C96 %1015.6 hPa11.3 kmCalmScattered Clouds
5:14 AM21 °C21 °C100 %1015.9 hPa4.8 kmCalmMostly Cloudy
5:17 AM21 °C21 °C100 %1015.9 hPa2.4 kmCalmMostly Cloudy
5:29 AM22 °C21 °C94 %1015.9 hPa1.6 kmCalmOvercast
5:52 AM21.7 °C21.7 °C100 %1015.6 hPa2.4 kmCalmOvercast
6:18 AM22 °C22 °C100 %1015.9 hPa4 kmCalmFogPatches of Fog
6:52 AM22.2 °C22.2 °C100 %1015.9 hPa3.2 kmCalmFogPatches of Fog
7:52 AM23.3 °C22.2 °C93 %1015.9 hPa3.2 kmCalmFogPatches of Fog
8:40 AM24 °C23 °C94 %1016.9 hPa9.7 kmCalmOvercast
8:52 AM24.4 °C22.8 °C91 %1016.6 hPa9.7 kmSSW (200°)9.3 km/hOvercast
9:13 AM26 °C23 °C83 %1016.6 hPa16.1 kmSSW (200°)11.1 km/hScattered Clouds
9:52 AM26.1 °C23.3 °C84 %1016.3 hPa16.1 kmSSW (200°)9.3 km/hScattered Clouds
10:33 AM27 °C23 °C79 %1016.6 hPa16.1 kmSSW (210°)11.1 km/hMostly Cloudy
10:52 AM27.2 °C23.3 °C79 %1016.3 hPa16.1 kmSSW (210°)7.4 km/hMostly Cloudy
11:52 AM28.3 °C22.8 °C72 %1016.3 hPa16.1 kmSSE (160°)9.3 km/hMostly Cloudy
12:30 PM28 °C22 °C70 %1016.3 hPa16.1 kmSSW (210°)16.7 km/hMostly Cloudy
12:52 PM29.4 °C23.3 °C69 %1015.9 hPa16.1 kmSSW (200°)16.7 km/hMostly Cloudy
1:52 PM28.9 °C23.3 °C72 %1015.6 hPa16.1 kmVariable11.1 km/hMostly Cloudy
2:52 PM30 °C23.3 °C67 %1014.6 hPa16.1 kmSouth (180°)14.8 km/hMostly Cloudy
3:52 PM30 °C23.9 °C70 %1014.6 hPa16.1 kmSW (220°)16.7 km/hMostly Cloudy
4:52 PM29.4 °C23.3 °C69 %1014.2 hPa16.1 kmSouth (180°)16.7 km/h25.9 km/hMostly Cloudy
5:52 PM28.9 °C23.3 °C72 %1013.5 hPa16.1 kmSouth (190°)14.8 km/hPartly Cloudy
6:52 PM28.9 °C22.8 °C69 %1013.5 hPa16.1 kmSSW (200°)14.8 km/hScattered Clouds
7:52 PM27.8 °C22.8 °C74 %1013.9 hPa16.1 kmSouth (190°)7.4 km/hScattered Clouds
8:52 PM27.2 °C22.2 °C74 %1013.9 hPa16.1 kmSouth (170°)7.4 km/hMostly Cloudy
9:52 PM26.1 °C22.2 °C79 %1014.6 hPa16.1 kmSouth (170°)11.1 km/hScattered Clouds
10:52 PM25.6 °C21.7 °C79 %1014.2 hPa16.1 kmSouth (180°)7.4 km/hPartly Cloudy
11:52 PM25.6 °C21.7 °C79 %1013.9 hPa16.1 kmSouth (170°)11.1 km/hClear
Hourly data recorded from KIAD, located 0 kilometers away from Herndon, Virginia




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