HERNDON, VIRGINIA

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Elevation: 322 feet Latitude: 38 57N Longitude: 077 27W

WEATHER

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Number of Records: 213,900; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - DECEMBER 17, 2014

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	40.8 ^°F	50 ^°F (12:52 pm)	34 ^°F (7:52 am)
Dewpoint	32.3 ^°F	41 ^°F (12:13 am)	24.1 ^°F (8:52 pm)
Humidity	74.6 ^%	100 ^% (12:13 am)	48 ^% (1:52 pm)
Barometer	29.99 ⁱⁿ	30.09 ⁱⁿ (11:52 pm)	29.91 ⁱⁿ (12:13 am)
Wind Speed	8.7 ^mph	18.4 ^mph (1:52 pm)
Wind Gust		26.5 ^mph (1:52 pm)

Weather Element	Average
Visibility	7.8 ^mi
Wind Direction	WSW (233 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	23 (Base 65)

Averaged from 27 records on December 17, 2014

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WIND DIRECTION BREAKOUT

WEATHER BY HOUR - DECEMBER 17, 2014

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Events	Conditions
12:13 AM	41.0 ^°F	41.0 ^°F	100 ^%	29.91 ⁱⁿ	0.1 ^mi	Calm			Fog	Fog
12:52 AM	39.9 ^°F	39.9 ^°F	100 ^%	29.91 ⁱⁿ	0.1 ^mi	Calm			Fog	Fog
1:52 AM	39.0 ^°F	39.0 ^°F	100 ^%	29.93 ⁱⁿ	0.1 ^mi	SW (230°)	3.5 ^mph		Fog	Fog
2:28 AM	37.4 ^°F	37.4 ^°F	100 ^%	29.93 ⁱⁿ	0.2 ^mi	WSW (240°)	3.5 ^mph		Fog	Fog
2:52 AM	37.0 ^°F	37.0 ^°F	100 ^%	29.94 ⁱⁿ	0.2 ^mi	South (190°)	3.5 ^mph		Fog	Fog
3:33 AM	35.6 ^°F	35.6 ^°F	100 ^%	29.93 ⁱⁿ	4.0 ^mi	Calm			Fog	Patches of Fog
3:52 AM	36.0 ^°F	35.1 ^°F	97 ^%	29.94 ⁱⁿ	5.0 ^mi	SW (220°)	3.5 ^mph			Clear
4:52 AM	36.0 ^°F	35.1 ^°F	97 ^%	29.94 ⁱⁿ	10.0 ^mi	SW (220°)	4.6 ^mph			Clear
5:52 AM	36.0 ^°F	35.1 ^°F	97 ^%	29.96 ⁱⁿ	10.0 ^mi	Calm				Partly Cloudy
6:52 AM	35.1 ^°F	33.1 ^°F	92 ^%	29.98 ⁱⁿ	10.0 ^mi	Calm				Clear
7:52 AM	34.0 ^°F	33.1 ^°F	96 ^%	29.99 ⁱⁿ	10.0 ^mi	SSW (200°)	4.6 ^mph			Scattered Clouds
8:52 AM	44.1 ^°F	39.9 ^°F	85 ^%	30.01 ⁱⁿ	10.0 ^mi	West (270°)	3.5 ^mph			Scattered Clouds
9:52 AM	48.9 ^°F	39.0 ^°F	69 ^%	30.02 ⁱⁿ	10.0 ^mi	West (280°)	8.1 ^mph			Partly Cloudy
10:52 AM	48.9 ^°F	37.0 ^°F	64 ^%	30.01 ⁱⁿ	10.0 ^mi	NW (310°)	16.1 ^mph			Mostly Cloudy
11:52 AM	48.9 ^°F	34.0 ^°F	56 ^%	30.00 ⁱⁿ	10.0 ^mi	WNW (300°)	16.1 ^mph	23.0 ^mph		Mostly Cloudy
12:52 PM	50.0 ^°F	32.0 ^°F	50 ^%	29.99 ⁱⁿ	10.0 ^mi	NW (320°)	16.1 ^mph	21.9 ^mph		Mostly Cloudy
1:52 PM	50.0 ^°F	30.9 ^°F	48 ^%	29.97 ⁱⁿ	10.0 ^mi	NW (310°)	18.4 ^mph	26.5 ^mph		Mostly Cloudy
2:52 PM	48.9 ^°F	30.0 ^°F	48 ^%	29.99 ⁱⁿ	10.0 ^mi	NW (310°)	13.8 ^mph	21.9 ^mph		Scattered Clouds
3:52 PM	46.9 ^°F	28.0 ^°F	48 ^%	29.99 ⁱⁿ	10.0 ^mi	NW (310°)	18.4 ^mph			Scattered Clouds
4:52 PM	44.6 ^°F	26.6 ^°F	49 ^%	30.00 ⁱⁿ	10.0 ^mi	NW (320°)	18.4 ^mph	24.2 ^mph		Partly Cloudy
5:52 PM	41.0 ^°F	26.1 ^°F	55 ^%	30.02 ⁱⁿ	10.0 ^mi	NW (320°)	11.5 ^mph			Scattered Clouds
6:52 PM	39.9 ^°F	25.0 ^°F	55 ^%	30.04 ⁱⁿ	10.0 ^mi	NNW (330°)	10.4 ^mph			Partly Cloudy
7:52 PM	37.9 ^°F	26.1 ^°F	62 ^%	30.06 ⁱⁿ	10.0 ^mi	NW (320°)	13.8 ^mph	24.2 ^mph		Partly Cloudy
8:52 PM	37.0 ^°F	24.1 ^°F	59 ^%	30.07 ⁱⁿ	10.0 ^mi	NW (320°)	18.4 ^mph	23.0 ^mph		Clear
9:52 PM	36.0 ^°F	24.1 ^°F	62 ^%	30.06 ⁱⁿ	10.0 ^mi	NNW (330°)	9.2 ^mph			Partly Cloudy
10:52 PM	36.0 ^°F	24.1 ^°F	62 ^%	30.07 ⁱⁿ	10.0 ^mi	NW (320°)	12.7 ^mph			Scattered Clouds
11:52 PM	36.0 ^°F	24.1 ^°F	62 ^%	30.09 ⁱⁿ	10.0 ^mi	NW (320°)	8.1 ^mph			Scattered Clouds

Hourly data recorded from KIAD, located miles away from Herndon, Virginia