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 1, 2015

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	43.6 ^°F	46.9 ^°F (11:52 pm)	39 ^°F (12:52 am)
Dewpoint	42.4 ^°F	46 ^°F (9:52 pm)	37.9 ^°F (12:52 am)
Humidity	95.7 ^%	100 ^% (9:52 pm)	89 ^% (2:14 pm)
Barometer	30.08 ⁱⁿ	30.20 ⁱⁿ (12:52 am)	29.96 ⁱⁿ (11:52 pm)
Wind Speed	3.7 ^mph	6.9 ^mph (1:52 am)

Weather Element	Average
Visibility	2.8 ^mi
Wind Direction	SSW (207.4 °)

Weather Element	Total
Precipitation	0.59 ⁱⁿ
Heating Degree Days	22.1 (Base 65)

Averaged from 31 records on December 1, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - DECEMBER 1, 2015

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Precipitation	Events	Conditions
12:52 AM	39.0 ^°F	37.9 ^°F	96 ^%	30.20 ⁱⁿ	2.0 ^mi	NNW (340°)	5.8 ^mph	0.02 ⁱⁿ	Rain	Light Rain
1:52 AM	39.9 ^°F	39.0 ^°F	97 ^%	30.19 ⁱⁿ	2.0 ^mi	North (350°)	6.9 ^mph	0.02 ⁱⁿ		Overcast
2:52 AM	39.9 ^°F	39.0 ^°F	97 ^%	30.19 ⁱⁿ	2.0 ^mi	NNW (340°)	6.9 ^mph	0.01 ⁱⁿ		Overcast
3:52 AM	39.9 ^°F	39.0 ^°F	97 ^%	30.17 ⁱⁿ	2.5 ^mi	North (350°)	6.9 ^mph	0.01 ⁱⁿ		Overcast
4:52 AM	41.0 ^°F	39.9 ^°F	96 ^%	30.16 ⁱⁿ	2.5 ^mi	NNW (340°)	3.5 ^mph	0.01 ⁱⁿ		Light Drizzle
5:52 AM	41.0 ^°F	39.9 ^°F	96 ^%	30.15 ⁱⁿ	1.5 ^mi	NNW (330°)	3.5 ^mph	0.01 ⁱⁿ	Rain	Light Rain
6:52 AM	41.0 ^°F	39.9 ^°F	96 ^%	30.15 ⁱⁿ	1.5 ^mi	NW (320°)	4.6 ^mph	0.06 ⁱⁿ	Rain	Light Rain
7:52 AM	41.0 ^°F	39.9 ^°F	96 ^%	30.14 ⁱⁿ	1.5 ^mi	NW (320°)	3.5 ^mph	0.10 ⁱⁿ	Rain	Light Rain
7:59 AM	41.0 ^°F	39.9 ^°F	96 ^%	30.14 ⁱⁿ	1.5 ^mi	NW (320°)	3.5 ^mph	0.01 ⁱⁿ	Rain	Light Rain
8:52 AM	42.1 ^°F	41.0 ^°F	96 ^%	30.14 ⁱⁿ	1.5 ^mi	West (260°)	3.5 ^mph	0.06 ⁱⁿ	Rain	Light Rain
9:52 AM	42.1 ^°F	39.9 ^°F	92 ^%	30.16 ⁱⁿ	1.5 ^mi	NW (310°)	4.6 ^mph	0.15 ⁱⁿ	Rain	Rain
10:52 AM	43.0 ^°F	41.0 ^°F	93 ^%	30.14 ⁱⁿ	1.5 ^mi	NW (310°)	4.6 ^mph	0.07 ⁱⁿ	Rain	Light Rain
10:59 AM	43.0 ^°F	41.0 ^°F	93 ^%	30.13 ⁱⁿ	7.0 ^mi	NW (320°)	4.6 ^mph	0.00 ⁱⁿ	Rain	Light Rain
11:52 AM	43.0 ^°F	42.1 ^°F	97 ^%	30.12 ⁱⁿ	3.0 ^mi	West (260°)	4.6 ^mph	0.03 ⁱⁿ	Rain	Light Rain
12:52 PM	44.1 ^°F	43.0 ^°F	96 ^%	30.09 ⁱⁿ	3.0 ^mi	Calm		0.00 ⁱⁿ	Rain	Light Rain
1:52 PM	45.0 ^°F	43.0 ^°F	93 ^%	30.05 ⁱⁿ	3.0 ^mi	Calm		0.03 ⁱⁿ	Rain	Light Rain
2:14 PM	46.0 ^°F	43.0 ^°F	89 ^%	30.02 ⁱⁿ	3.0 ^mi	Calm		0.00 ⁱⁿ	Rain	Light Rain
2:52 PM	46.0 ^°F	44.1 ^°F	93 ^%	30.03 ⁱⁿ	3.0 ^mi	South (170°)	4.6 ^mph	0.00 ⁱⁿ	Rain	Light Rain
3:52 PM	46.0 ^°F	44.1 ^°F	93 ^%	30.04 ⁱⁿ	3.0 ^mi	South (180°)	6.9 ^mph	0.00 ⁱⁿ		Overcast
4:52 PM	45.0 ^°F	44.1 ^°F	97 ^%	30.04 ⁱⁿ	10.0 ^mi	SSW (200°)	3.5 ^mph			Overcast
5:52 PM	45.0 ^°F	44.1 ^°F	97 ^%	30.04 ⁱⁿ	10.0 ^mi	SSW (210°)	4.6 ^mph			Overcast
6:52 PM	45.0 ^°F	44.1 ^°F	97 ^%	30.02 ⁱⁿ	9.0 ^mi	South (190°)	3.5 ^mph			Overcast
7:21 PM	45.0 ^°F	44.1 ^°F	97 ^%	30.02 ⁱⁿ	7.0 ^mi	Calm				Overcast
7:25 PM	45.0 ^°F	44.1 ^°F	97 ^%	30.01 ⁱⁿ	1.0 ^mi	Calm				Overcast
7:52 PM	46.0 ^°F	44.1 ^°F	93 ^%	30.01 ⁱⁿ	1.0 ^mi	Calm				Overcast
8:09 PM	45.0 ^°F	44.1 ^°F	97 ^%	30.00 ⁱⁿ	0.5 ^mi	South (180°)	3.5 ^mph		Fog	Fog
8:52 PM	46.0 ^°F	45.0 ^°F	96 ^%	30.00 ⁱⁿ	0.5 ^mi	SSE (150°)	5.8 ^mph		Fog	Fog
8:58 PM	46.0 ^°F	45.0 ^°F	96 ^%	30.01 ⁱⁿ	0.1 ^mi	South (180°)	3.5 ^mph		Fog	Fog
9:52 PM	46.0 ^°F	46.0 ^°F	100 ^%	30.01 ⁱⁿ	0.1 ^mi	South (190°)	3.5 ^mph		Fog	Fog
10:52 PM	46.0 ^°F	46.0 ^°F	100 ^%	29.99 ⁱⁿ	0.1 ^mi	South (170°)	4.6 ^mph		Fog	Fog
11:52 PM	46.9 ^°F	46.0 ^°F	97 ^%	29.96 ⁱⁿ	0.1 ^mi	SE (140°)	3.5 ^mph	0.00 ⁱⁿ	Fog	Fog

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