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 16, 2014

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	39.7 ^°F	44.1 ^°F (3:52 pm)	28 ^°F (5:52 am)
Dewpoint	38.9 ^°F	43 ^°F (3:52 pm)	27 ^°F (5:52 am)
Humidity	97 ^%	100 ^% (11:03 am)	85 ^% (9:52 am)
Barometer	29.94 ⁱⁿ	30.04 ⁱⁿ (12:52 am)	29.86 ⁱⁿ (3:52 pm)
Wind Speed	2.6 ^mph	17.3 ^mph (3:56 pm)
Wind Gust		28.8 ^mph (3:56 pm)

Weather Element	Average
Visibility	2.7 ^mi
Wind Direction	E (85.3 °)

Weather Element	Total
Precipitation	0.96 ⁱⁿ
Heating Degree Days	29 (Base 65)

Averaged from 40 records on December 16, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - DECEMBER 16, 2014

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	34.0 ^°F	33.1 ^°F	96 ^%	30.04 ⁱⁿ	6.0 ^mi	Calm					Mostly Cloudy
1:52 AM	33.1 ^°F	32.0 ^°F	96 ^%	30.04 ⁱⁿ	6.0 ^mi	Calm					Scattered Clouds
2:52 AM	34.0 ^°F	33.1 ^°F	96 ^%	30.02 ⁱⁿ	7.0 ^mi	SE (130°)	4.6 ^mph				Mostly Cloudy
3:52 AM	34.0 ^°F	33.1 ^°F	96 ^%	30.02 ⁱⁿ	7.0 ^mi	Calm					Partly Cloudy
4:52 AM	36.0 ^°F	34.0 ^°F	93 ^%	30.01 ⁱⁿ	7.0 ^mi	Calm					Partly Cloudy
5:52 AM	28.0 ^°F	27.0 ^°F	96 ^%	30.01 ⁱⁿ	5.0 ^mi	Calm				Fog	Scattered Clouds
6:52 AM	30.0 ^°F	28.9 ^°F	96 ^%	30.00 ⁱⁿ	5.0 ^mi	SSE (160°)	3.5 ^mph			Fog	Mostly Cloudy
7:23 AM	33.8 ^°F	30.2 ^°F	87 ^%	29.99 ⁱⁿ	2.5 ^mi	SSE (150°)	3.5 ^mph			Fog	Mostly Cloudy
7:52 AM	37.0 ^°F	36.0 ^°F	96 ^%	29.99 ⁱⁿ	2.5 ^mi	South (170°)	3.5 ^mph			Fog	Mostly Cloudy
7:59 AM	37.4 ^°F	35.6 ^°F	93 ^%	29.98 ⁱⁿ	3.0 ^mi	Calm				Fog	Mostly Cloudy
8:52 AM	39.9 ^°F	37.9 ^°F	93 ^%	30.00 ⁱⁿ	3.0 ^mi	Calm				Fog	Mostly Cloudy
9:52 AM	42.1 ^°F	37.9 ^°F	85 ^%	29.99 ⁱⁿ	3.0 ^mi	South (190°)	5.8 ^mph		0.00 ⁱⁿ		Overcast
10:22 AM	41.0 ^°F	39.2 ^°F	93 ^%	29.99 ⁱⁿ	1.8 ^mi	SSW (210°)	4.6 ^mph		0.04 ⁱⁿ	Rain	Rain
10:52 AM	39.9 ^°F	39.0 ^°F	97 ^%	30.00 ⁱⁿ	1.5 ^mi	Calm			0.12 ⁱⁿ	Rain	Rain
11:03 AM	39.2 ^°F	39.2 ^°F	100 ^%	29.97 ⁱⁿ	1.2 ^mi	Calm			0.05 ⁱⁿ	Rain	Rain
11:06 AM	39.2 ^°F	39.2 ^°F	100 ^%	29.97 ⁱⁿ	1.5 ^mi	Calm			0.06 ⁱⁿ	Rain	Rain
11:40 AM	39.2 ^°F	39.2 ^°F	100 ^%	29.97 ⁱⁿ	1.8 ^mi	SSE (160°)	4.6 ^mph		0.14 ⁱⁿ	Rain	Light Rain
11:52 AM	39.9 ^°F	39.9 ^°F	100 ^%	29.97 ⁱⁿ	1.5 ^mi	SSE (150°)	5.8 ^mph		0.17 ⁱⁿ	Rain	Rain
12:00 PM	39.2 ^°F	39.2 ^°F	100 ^%	29.96 ⁱⁿ	1.5 ^mi	SSE (150°)	8.1 ^mph		0.03 ⁱⁿ	Rain	Rain
12:23 PM	41.0 ^°F	39.2 ^°F	93 ^%	29.90 ⁱⁿ	2.0 ^mi	ESE (110°)	4.6 ^mph		0.11 ⁱⁿ	Rain	Light Rain
12:42 PM	41.0 ^°F	39.2 ^°F	93 ^%	29.91 ⁱⁿ	2.0 ^mi	SE (140°)	4.6 ^mph		0.12 ⁱⁿ	Rain	Light Rain
12:52 PM	41.0 ^°F	41.0 ^°F	100 ^%	29.90 ⁱⁿ	2.0 ^mi	ESE (110°)	4.6 ^mph		0.12 ⁱⁿ		Overcast
1:52 PM	42.1 ^°F	41.0 ^°F	96 ^%	29.89 ⁱⁿ	2.0 ^mi	SSE (160°)	4.6 ^mph				Overcast
2:26 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.87 ⁱⁿ	2.0 ^mi	SSE (150°)	3.5 ^mph				Overcast
2:52 PM	43.0 ^°F	42.1 ^°F	97 ^%	29.89 ⁱⁿ	2.0 ^mi	South (170°)	6.9 ^mph				Overcast
3:52 PM	44.1 ^°F	43.0 ^°F	96 ^%	29.86 ⁱⁿ	2.0 ^mi	South (180°)	3.5 ^mph				Overcast
3:56 PM	39.2 ^°F	39.2 ^°F	100 ^%	29.90 ⁱⁿ	10.0 ^mi	WSW (250°)	17.3 ^mph	28.8 ^mph			Overcast
4:52 PM	44.1 ^°F	43.0 ^°F	96 ^%	29.88 ⁱⁿ	2.0 ^mi	SSW (210°)	3.5 ^mph				Overcast
5:35 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.87 ⁱⁿ	2.0 ^mi	Calm					Overcast
5:52 PM	43.0 ^°F	43.0 ^°F	100 ^%	29.89 ⁱⁿ	1.2 ^mi	SW (220°)	3.5 ^mph				Overcast
6:52 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.90 ⁱⁿ	1.2 ^mi	Calm					Overcast
7:46 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.90 ⁱⁿ	0.5 ^mi	Calm					Overcast
7:52 PM	43.0 ^°F	43.0 ^°F	100 ^%	29.91 ⁱⁿ	0.5 ^mi	Calm					Overcast
8:22 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.90 ⁱⁿ	0.5 ^mi	Calm					Overcast
8:52 PM	43.0 ^°F	42.1 ^°F	97 ^%	29.91 ⁱⁿ	0.5 ^mi	Calm					Overcast
9:25 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.90 ⁱⁿ	2.0 ^mi	Calm					Overcast
9:52 PM	42.1 ^°F	42.1 ^°F	100 ^%	29.91 ⁱⁿ	3.0 ^mi	WSW (240°)	3.5 ^mph				Overcast
10:41 PM	42.8 ^°F	42.8 ^°F	100 ^%	29.91 ⁱⁿ	2.5 ^mi	Calm					Overcast
10:52 PM	42.1 ^°F	42.1 ^°F	100 ^%	29.92 ⁱⁿ	0.5 ^mi	Calm					Overcast
11:52 PM	41.0 ^°F	41.0 ^°F	100 ^%	29.92 ⁱⁿ	0.1 ^mi	Calm				Fog	Fog

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