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 - 27 OCTOBER, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	11.7 ^°C	21.1 ^°C (2:52 pm)	1.1 ^°C (6:52 am)
Dewpoint	0.9 ^°C	4.4 ^°C (11:52 pm)	-1.1 ^°C (12:52 am)
Humidity	53.4 ^%	89 ^% (5:52 am)	24 ^% (3:52 pm)
Barometer	1016.9 ^hPa	1019.3 hPa (9:52 am)	1014.2 hPa (12:52 am)
Wind Speed	6 ^km/h	16.7 ^km/h (11:52 pm)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	ESE (102.5 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	7.2 (Base 18.3)
Growing Degree Days	1.1 (Base 10)

Averaged from 24 records on 27 October, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 27 OCTOBER, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:52 AM	6.7 ^°C	-1.1 ^°C	58 ^%	1014.2 hPa	16.1 ^km	Calm		Clear
1:52 AM	4.4 ^°C	0 ^°C	73 ^%	1014.9 hPa	16.1 ^km	SSE (150°)	5.6 ^km/h	Clear
2:52 AM	3.3 ^°C	0 ^°C	79 ^%	1015.2 hPa	16.1 ^km	Calm		Clear
3:52 AM	2.8 ^°C	0 ^°C	82 ^%	1015.6 hPa	16.1 ^km	Calm		Clear
4:52 AM	2.2 ^°C	0 ^°C	86 ^%	1016.3 hPa	16.1 ^km	Calm		Clear
5:52 AM	1.7 ^°C	0 ^°C	89 ^%	1016.6 hPa	16.1 ^km	Calm		Clear
6:52 AM	1.1 ^°C	-0.6 ^°C	89 ^%	1017.3 hPa	16.1 ^km	Calm		Clear
7:52 AM	1.7 ^°C	0 ^°C	89 ^%	1017.9 hPa	16.1 ^km	Calm		Partly Cloudy
8:52 AM	6.7 ^°C	2.2 ^°C	73 ^%	1019 hPa	16.1 ^km	Calm		Partly Cloudy
9:52 AM	11 ^°C	3 ^°C	58 ^%	1019.3 hPa	16.1 ^km	South (190°)	5.6 ^km/h	Partly Cloudy
10:52 AM	14.4 ^°C	1.7 ^°C	42 ^%	1019.3 hPa	16.1 ^km	SSW (210°)	7.4 ^km/h	Partly Cloudy
11:52 AM	17.2 ^°C	-1.1 ^°C	29 ^%	1019.3 hPa	16.1 ^km	Variable	5.6 ^km/h	Scattered Clouds
12:52 PM	19 ^°C	0 ^°C	28 ^%	1018.6 hPa	16.1 ^km	South (180°)	14.8 ^km/h	Partly Cloudy
1:52 PM	20 ^°C	-0.6 ^°C	25 ^%	1017.6 hPa	16.1 ^km	SSE (150°)	11.1 ^km/h	Partly Cloudy
2:52 PM	21.1 ^°C	0 ^°C	25 ^%	1017.3 hPa	16.1 ^km	SSW (210°)	13 ^km/h	Partly Cloudy
3:52 PM	21.1 ^°C	-0.6 ^°C	24 ^%	1016.9 hPa	16.1 ^km	Calm		Scattered Clouds
4:52 PM	20.6 ^°C	0.6 ^°C	26 ^%	1016.6 hPa	16.1 ^km	SSE (150°)	13 ^km/h	Scattered Clouds
5:52 PM	18.3 ^°C	2.2 ^°C	34 ^%	1016.9 hPa	16.1 ^km	SSE (160°)	9.3 ^km/h	Scattered Clouds
6:52 PM	15 ^°C	3.3 ^°C	46 ^%	1017.3 hPa	16.1 ^km	SSE (150°)	7.4 ^km/h	Partly Cloudy
7:52 PM	16 ^°C	2 ^°C	39 ^%	1016.9 hPa	16.1 ^km	SSE (160°)	11.1 ^km/h	Partly Cloudy
8:52 PM	16.1 ^°C	1.1 ^°C	36 ^%	1016.9 hPa	16.1 ^km	South (170°)	9.3 ^km/h	Scattered Clouds
9:52 PM	14.4 ^°C	1.7 ^°C	42 ^%	1016.9 hPa	16.1 ^km	South (190°)	7.4 ^km/h	Partly Cloudy
10:52 PM	11.7 ^°C	2.8 ^°C	55 ^%	1016.6 hPa	16.1 ^km	SSW (200°)	5.6 ^km/h	Mostly Cloudy
11:52 PM	13.3 ^°C	4.4 ^°C	55 ^%	1016.3 hPa	16.1 ^km	South (190°)	16.7 ^km/h	Mostly Cloudy

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