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 - 31 OCTOBER, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	7.2 ^°C	12 ^°C (3:52 pm)	2.2 ^°C (12:52 am)
Dewpoint	2 ^°C	4.4 ^°C (9:52 am)	1 ^°C (3:52 pm)
Humidity	72.5 ^%	97 ^% (4:52 am)	47 ^% (3:52 pm)
Barometer	1013.9 ^hPa	1017.3 hPa (12:52 am)	1010.5 hPa (11:52 pm)
Wind Speed	4.2 ^km/h	9.3 ^km/h (10:52 am)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	ENE (69.2 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	11.2 (Base 18.3)

Averaged from 24 records on 31 October, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 31 OCTOBER, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:52 AM	2.2 ^°C	1.1 ^°C	93 ^%	1017.3 hPa	16.1 ^km	Calm		Scattered Clouds
1:52 AM	2.2 ^°C	1.1 ^°C	93 ^%	1017.3 hPa	16.1 ^km	Calm		Scattered Clouds
2:52 AM	2.8 ^°C	1.7 ^°C	93 ^%	1016.9 hPa	16.1 ^km	Calm		Overcast
3:52 AM	2.8 ^°C	1.7 ^°C	93 ^%	1016.6 hPa	16.1 ^km	Calm		Overcast
4:52 AM	2.2 ^°C	1.7 ^°C	97 ^%	1016.3 hPa	16.1 ^km	Calm		Overcast
5:52 AM	2.8 ^°C	1.7 ^°C	93 ^%	1016.3 hPa	16.1 ^km	Calm		Mostly Cloudy
6:52 AM	2.2 ^°C	1.1 ^°C	93 ^%	1015.9 hPa	16.1 ^km	Calm		Mostly Cloudy
7:52 AM	2.8 ^°C	1.7 ^°C	93 ^%	1016.3 hPa	16.1 ^km	NW (310°)	5.6 ^km/h	Mostly Cloudy
8:52 AM	5 ^°C	3.9 ^°C	93 ^%	1016.3 hPa	16.1 ^km	Calm		Mostly Cloudy
9:52 AM	6.7 ^°C	4.4 ^°C	85 ^%	1015.9 hPa	16.1 ^km	Calm		Mostly Cloudy
10:52 AM	10 ^°C	3.3 ^°C	63 ^%	1015.6 hPa	16.1 ^km	East (100°)	9.3 ^km/h	Mostly Cloudy
11:52 AM	11.1 ^°C	3.9 ^°C	61 ^%	1014.9 hPa	16.1 ^km	Calm		Mostly Cloudy
12:52 PM	11.1 ^°C	2.8 ^°C	57 ^%	1013.9 hPa	16.1 ^km	Calm		Mostly Cloudy
1:52 PM	11.7 ^°C	2.8 ^°C	55 ^%	1012.9 hPa	16.1 ^km	East (100°)	5.6 ^km/h	Mostly Cloudy
2:52 PM	11.7 ^°C	1.7 ^°C	50 ^%	1011.9 hPa	16.1 ^km	NE (40°)	7.4 ^km/h	Overcast
3:52 PM	12 ^°C	1 ^°C	47 ^%	1011.5 hPa	16.1 ^km	ENE (70°)	9.3 ^km/h	Overcast
4:52 PM	11 ^°C	1 ^°C	50 ^%	1011.5 hPa	16.1 ^km	East (80°)	9.3 ^km/h	Overcast
5:52 PM	10.6 ^°C	1.7 ^°C	54 ^%	1011.5 hPa	16.1 ^km	ENE (60°)	7.4 ^km/h	Mostly Cloudy
6:52 PM	10 ^°C	1.7 ^°C	57 ^%	1011.5 hPa	16.1 ^km	East (90°)	7.4 ^km/h	Overcast
7:52 PM	8.9 ^°C	1.7 ^°C	61 ^%	1011.5 hPa	16.1 ^km	NE (40°)	7.4 ^km/h	Overcast
8:52 PM	8.3 ^°C	1.7 ^°C	63 ^%	1011.2 hPa	16.1 ^km	NNE (20°)	9.3 ^km/h	Overcast
9:52 PM	7.8 ^°C	2.2 ^°C	68 ^%	1011.2 hPa	16.1 ^km	NNE (30°)	7.4 ^km/h	Overcast
10:52 PM	7.8 ^°C	1.7 ^°C	66 ^%	1010.8 hPa	16.1 ^km	North (360°)	5.6 ^km/h	Mostly Cloudy
11:52 PM	7.8 ^°C	1.1 ^°C	63 ^%	1010.5 hPa	16.1 ^km	North (360°)	7.4 ^km/h	Overcast

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