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 - 29 MARCH, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	1.2 ^°C	7.2 ^°C (4:52 pm)	-5.6 ^°C (5:52 am)
Dewpoint	-14.3 ^°C	-13.3 ^°C (7:52 am)	-16.7 ^°C (5:52 pm)
Humidity	33.1 ^%	53 ^% (5:52 am)	17 ^% (5:52 pm)
Barometer	1025.7 ^hPa	1030.1 hPa (10:52 am)	1020 hPa (11:52 pm)
Wind Speed	12.7 ^km/h	29.6 ^km/h (12:52 am)
Wind Gust		40.7 ^km/h (12:52 am)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	SW (222.5 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	17.6 (Base 18.3)

Averaged from 24 records on 29 March, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 29 MARCH, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Conditions
12:52 AM	-2.2 ^°C	-16.1 ^°C	34 ^%	1025.4 hPa	16.1 ^km	NW (320°)	29.6 ^km/h	40.7 ^km/h	Clear
1:52 AM	-3.3 ^°C	-16.1 ^°C	37 ^%	1025.7 hPa	16.1 ^km	NW (320°)	22.2 ^km/h		Clear
2:52 AM	-3.9 ^°C	-15 ^°C	43 ^%	1026.1 hPa	16.1 ^km	NW (320°)	16.7 ^km/h		Clear
3:52 AM	-3.9 ^°C	-15 ^°C	43 ^%	1026.4 hPa	16.1 ^km	NW (320°)	20.4 ^km/h		Clear
4:52 AM	-4.4 ^°C	-14.4 ^°C	46 ^%	1026.8 hPa	16.1 ^km	NW (310°)	16.7 ^km/h		Clear
5:52 AM	-5.6 ^°C	-13.9 ^°C	53 ^%	1027.1 hPa	16.1 ^km	WNW (300°)	9.3 ^km/h		Clear
6:52 AM	-5.6 ^°C	-14.4 ^°C	51 ^%	1028.4 hPa	16.1 ^km	NW (320°)	7.4 ^km/h		Clear
7:52 AM	-4.4 ^°C	-13.3 ^°C	51 ^%	1029.1 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Clear
8:52 AM	-2.8 ^°C	-13.3 ^°C	45 ^%	1029.5 hPa	16.1 ^km	NW (310°)	22.2 ^km/h		Clear
9:52 AM	-1.1 ^°C	-13.3 ^°C	40 ^%	1029.8 hPa	16.1 ^km	NNW (330°)	18.5 ^km/h		Clear
10:52 AM	0 ^°C	-13.9 ^°C	35 ^%	1030.1 hPa	16.1 ^km	North (350°)	16.7 ^km/h		Clear
11:52 AM	1.1 ^°C	-13.3 ^°C	34 ^%	1029.5 hPa	16.1 ^km	WNW (290°)	11.1 ^km/h		Clear
12:52 PM	2.8 ^°C	-14.4 ^°C	28 ^%	1028.8 hPa	16.1 ^km	NNE (20°)	5.6 ^km/h		Partly Cloudy
1:52 PM	3.9 ^°C	-14.4 ^°C	26 ^%	1027.8 hPa	16.1 ^km	Variable	7.4 ^km/h		Partly Cloudy
2:52 PM	5.6 ^°C	-14.4 ^°C	23 ^%	1026.8 hPa	16.1 ^km	West (260°)	9.3 ^km/h		Partly Cloudy
3:52 PM	6.7 ^°C	-15 ^°C	20 ^%	1025.4 hPa	16.1 ^km	Variable	5.6 ^km/h		Partly Cloudy
4:52 PM	7.2 ^°C	-15 ^°C	19 ^%	1025.1 hPa	16.1 ^km	WSW (250°)	5.6 ^km/h		Scattered Clouds
5:52 PM	7.2 ^°C	-16.7 ^°C	17 ^%	1023.7 hPa	16.1 ^km	Calm			Scattered Clouds
6:52 PM	6.7 ^°C	-15 ^°C	20 ^%	1022.7 hPa	16.1 ^km	South (170°)	9.3 ^km/h		Mostly Cloudy
7:52 PM	5 ^°C	-13.9 ^°C	25 ^%	1022.4 hPa	16.1 ^km	South (180°)	9.3 ^km/h		Clear
8:52 PM	3.9 ^°C	-13.3 ^°C	28 ^%	1022.4 hPa	16.1 ^km	SSE (160°)	11.1 ^km/h		Scattered Clouds
9:52 PM	4.4 ^°C	-13.3 ^°C	27 ^%	1020.7 hPa	16.1 ^km	SSE (160°)	14.8 ^km/h		Scattered Clouds
10:52 PM	5 ^°C	-13.9 ^°C	25 ^%	1020.3 hPa	16.1 ^km	South (170°)	13 ^km/h		Overcast
11:52 PM	5.6 ^°C	-13.3 ^°C	25 ^%	1020 hPa	16.1 ^km	South (180°)	14.8 ^km/h	27.8 ^km/h	Overcast

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