HERNDON, VIRGINIA

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Elevation: 98 meters 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 - 5 MARCH, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	-2.1 ^°C	3.9 ^°C (12:52 am)	-7.2 ^°C (11:52 pm)
Dewpoint	-4.4 ^°C	2.8 ^°C (12:52 am)	-14.4 ^°C (11:52 pm)
Humidity	84.8 ^%	93 ^% (12:52 am)	57 ^% (10:52 pm)
Barometer	1022 ^hPa	1031.5 hPa (10:52 pm)	1014.9 hPa (12:52 am)
Wind Speed	20.4 ^km/h	29.6 ^km/h (8:52 am)
Wind Gust		44.4 ^km/h (7:42 am)

Weather Element	Average
Visibility	5.5 ^km
Wind Direction	NNW (340.5 °)

Weather Element	Total
Precipitation	21.34 ^mm
Heating Degree Days	20 (Base 18.3)

Averaged from 41 records on 5 March, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 5 MARCH, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	3.9 ^°C	2.8 ^°C	93 ^%	1014.9 hPa	9.7 ^km	North (360°)	13 ^km/h		0.51 mm	Rain	Light Rain
1:52 AM	3.3 ^°C	1.7 ^°C	89 ^%	1015.6 hPa	9.7 ^km	North (350°)	18.5 ^km/h		0.76 mm	Rain	Light Rain
2:52 AM	2.8 ^°C	1.1 ^°C	89 ^%	1015.6 hPa	11.3 ^km	North (350°)	16.7 ^km/h		0 mm	Rain	Light Rain
3:52 AM	2.2 ^°C	0.6 ^°C	89 ^%	1015.9 hPa	9.7 ^km	NNW (340°)	22.2 ^km/h		0.76 mm	Rain	Light Rain
4:52 AM	2.2 ^°C	0 ^°C	86 ^%	1016.9 hPa	14.5 ^km	North (350°)	20.4 ^km/h		0.25 mm		Overcast
5:52 AM	1.1 ^°C	-0.6 ^°C	89 ^%	1017.6 hPa	12.9 ^km	NNW (340°)	22.2 ^km/h	35.2 ^km/h	0 mm	Rain	Light Rain
6:08 AM	1 ^°C	-1 ^°C	87 ^%	1017.6 hPa	8 ^km	NNW (340°)	24.1 ^km/h		0 mm	Rain	Rain
6:52 AM	1 ^°C	-1 ^°C	87 ^%	1018.3 hPa	6.4 ^km	NNW (340°)	24.1 ^km/h	35.2 ^km/h		Rain	Ice Pellets
7:03 AM	1 ^°C	-1 ^°C	87 ^%	1017.9 hPa	2.4 ^km	North (350°)	22.2 ^km/h		0.25 mm	Snow	Light Snow
7:13 AM	0 ^°C	-1 ^°C	93 ^%	1018.3 hPa	1.3 ^km	North (360°)	22.2 ^km/h		1.02 mm	Snow	Light Snow
7:42 AM	-1 ^°C	-2 ^°C	93 ^%	1019 hPa	2.4 ^km	North (360°)	24.1 ^km/h	44.4 ^km/h	2.03 mm	Snow	Light Snow
7:52 AM	-1 ^°C	-2 ^°C	93 ^%	1020 hPa	2.4 ^km	North (350°)	22.2 ^km/h	33.3 ^km/h		Snow	Light Snow
7:59 AM	-1 ^°C	-2 ^°C	93 ^%	1019.6 hPa	1.6 ^km	North (350°)	25.9 ^km/h	37 ^km/h	0 mm	Snow	Light Snow
8:52 AM	-1.1 ^°C	-3.3 ^°C	85 ^%	1020.7 hPa	1.6 ^km	NNW (340°)	29.6 ^km/h	42.6 ^km/h	1.27 mm	Snow	Light Snow
8:55 AM	-1 ^°C	-3 ^°C	86 ^%	1020.3 hPa	1.6 ^km	NNW (340°)	27.8 ^km/h	40.7 ^km/h	0.25 mm	Snow	Light Snow
9:06 AM	-2 ^°C	-3 ^°C	93 ^%	1020 hPa	1.3 ^km	NNW (340°)	22.2 ^km/h		0.25 mm	Snow	Light Snow
9:12 AM	-2 ^°C	-3 ^°C	93 ^%	1020 hPa	0.8 ^km	NNW (340°)	25.9 ^km/h		0.51 mm	Fog-Snow	Snow
9:52 AM	-2 ^°C	-3 ^°C	93 ^%	1020.3 hPa	0.8 ^km	NNW (340°)	20.4 ^km/h			Fog-Snow	Snow
10:02 AM	-2 ^°C	-3 ^°C	93 ^%	1021 hPa	0.8 ^km	NNW (340°)	18.5 ^km/h		0.25 mm	Fog-Snow	Snow
10:52 AM	-2.2 ^°C	-3.3 ^°C	92 ^%	1022 hPa	0.8 ^km	NNW (340°)	16.7 ^km/h		2.29 mm	Fog-Snow	Snow
11:52 AM	-2.2 ^°C	-3.9 ^°C	88 ^%	1021.7 hPa	0.8 ^km	NNW (340°)	20.4 ^km/h		2.03 mm	Fog-Snow	Snow
12:25 PM	-3 ^°C	-4 ^°C	93 ^%	1021.7 hPa	0.8 ^km	NNW (330°)	20.4 ^km/h		0.76 mm	Fog-Snow	Snow
12:52 PM	-2.8 ^°C	-4.4 ^°C	89 ^%	1022.7 hPa	1.3 ^km	NNW (330°)	13 ^km/h		1.02 mm	Snow	Light Snow
12:54 PM	-3 ^°C	-4 ^°C	93 ^%	1022.4 hPa	0.8 ^km	NNW (330°)	14.8 ^km/h		0 mm	Fog-Snow	Snow
1:52 PM	-3.9 ^°C	-5.6 ^°C	88 ^%	1023 hPa	0.3 ^km	NNW (340°)	20.4 ^km/h		2.54 mm	Fog-Snow	Snow
2:52 PM	-3.9 ^°C	-5.6 ^°C	88 ^%	1022.4 hPa	0.3 ^km	NNW (340°)	20.4 ^km/h		2.79 mm	Fog-Snow	Snow
3:52 PM	-4 ^°C	-6 ^°C	86 ^%	1023.4 hPa	0.8 ^km	NNW (340°)	16.7 ^km/h			Fog-Snow	Snow
4:16 PM	-4 ^°C	-6 ^°C	86 ^%	1023.7 hPa	1.6 ^km	NNW (330°)	20.4 ^km/h		0.25 mm	Snow	Light Snow
4:44 PM	-4 ^°C	-7 ^°C	80 ^%	1024.4 hPa	2.9 ^km	NNW (340°)	14.8 ^km/h		0.51 mm	Snow	Light Snow
4:49 PM	-4 ^°C	-7 ^°C	80 ^%	1024 hPa	3.2 ^km	NNW (340°)	16.7 ^km/h		0.51 mm	Snow	Light Snow
4:52 PM	-4.4 ^°C	-6.7 ^°C	84 ^%	1024.7 hPa	3.2 ^km	NNW (340°)	14.8 ^km/h		0.51 mm	Snow	Light Snow
5:41 PM	-4 ^°C	-7 ^°C	80 ^%	1025.1 hPa	3.2 ^km	NNW (330°)	20.4 ^km/h		0 mm	Snow	Light Snow
5:52 PM	-4.4 ^°C	-6.7 ^°C	84 ^%	1025.7 hPa	3.2 ^km	NNW (330°)	20.4 ^km/h		0 mm	Snow	Light Snow
5:54 PM	-4 ^°C	-7 ^°C	80 ^%	1025.4 hPa	4.8 ^km	NNW (330°)	20.4 ^km/h		0 mm	Snow	Light Snow
6:52 PM	-4.4 ^°C	-7.2 ^°C	81 ^%	1027.1 hPa	8 ^km	NNW (340°)	14.8 ^km/h		0 mm	Snow	Light Snow
7:23 PM	-4 ^°C	-8 ^°C	74 ^%	1027.4 hPa	14.5 ^km	NNW (340°)	16.7 ^km/h		0 mm		Overcast
7:52 PM	-4.4 ^°C	-8.9 ^°C	71 ^%	1028.1 hPa	11.3 ^km	NNW (340°)	20.4 ^km/h	33.3 ^km/h	0 mm	Snow	Light Snow
8:52 PM	-5 ^°C	-10.6 ^°C	65 ^%	1029.5 hPa	14.5 ^km	NNW (330°)	16.7 ^km/h		0 mm	Snow	Light Snow
9:52 PM	-6 ^°C	-11 ^°C	68 ^%	1030.1 hPa	16.1 ^km	NNW (330°)	22.2 ^km/h				Mostly Cloudy
10:52 PM	-6.1 ^°C	-13.3 ^°C	57 ^%	1031.5 hPa	16.1 ^km	NNW (340°)	22.2 ^km/h				Scattered Clouds
11:52 PM	-7.2 ^°C	-14.4 ^°C	57 ^%	1031.5 hPa	16.1 ^km	NNW (330°)	27.8 ^km/h				Clear

Hourly data recorded from KIAD, located 0 kilometers away from Herndon, Virginia