DULLES, VIRGINIA

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Elevation: 88 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 - 28 JANUARY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	-3.2 ^°C	1.7 ^°C (3:52 pm)	-7.2 ^°C (10:52 pm)
Dewpoint	-13.3 ^°C	-10.6 ^°C (12:52 am)	-14.4 ^°C (7:52 pm)
Humidity	47.6 ^%	65 ^% (10:52 pm)	32 ^% (2:52 pm)
Barometer	1023.4 ^hPa	1028.1 hPa (10:52 pm)	1016.6 hPa (12:52 am)
Wind Speed	19.2 ^km/h	31.5 ^km/h (12:52 am)
Wind Gust		50.1 ^km/h (1:52 am)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	NW (312.5 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	21.1 (Base 18.3)

Averaged from 24 records on 28 January, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 28 JANUARY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Conditions
12:52 AM	-3.9 ^°C	-10.6 ^°C	60 ^%	1016.6 hPa	16.1 ^km	NNW (330°)	31.5 ^km/h	42.6 ^km/h	Scattered Clouds
1:52 AM	-4.4 ^°C	-11.1 ^°C	60 ^%	1017.6 hPa	16.1 ^km	NNW (330°)	29.6 ^km/h	50.1 ^km/h	Clear
2:52 AM	-5 ^°C	-11.7 ^°C	60 ^%	1018.3 hPa	16.1 ^km	NW (320°)	27.8 ^km/h	40.7 ^km/h	Clear
3:52 AM	-5.6 ^°C	-12.2 ^°C	60 ^%	1018.6 hPa	16.1 ^km	NNW (330°)	24.1 ^km/h	37 ^km/h	Partly Cloudy
4:52 AM	-6 ^°C	-13 ^°C	58 ^%	1019.3 hPa	16.1 ^km	NNW (330°)	20.4 ^km/h	33.3 ^km/h	Clear
5:52 AM	-6.7 ^°C	-13.3 ^°C	60 ^%	1020.7 hPa	16.1 ^km	NNW (330°)	14.8 ^km/h		Clear
6:52 AM	-6.7 ^°C	-13.3 ^°C	60 ^%	1022 hPa	16.1 ^km	NW (320°)	18.5 ^km/h		Clear
7:52 AM	-6.1 ^°C	-13.9 ^°C	55 ^%	1022.7 hPa	16.1 ^km	NW (320°)	20.4 ^km/h		Clear
8:52 AM	-5 ^°C	-13.9 ^°C	50 ^%	1023.7 hPa	16.1 ^km	NNW (330°)	24.1 ^km/h		Clear
9:52 AM	-3 ^°C	-14 ^°C	43 ^%	1024 hPa	16.1 ^km	NNW (330°)	22.2 ^km/h	33.3 ^km/h	Clear
10:52 AM	-2.8 ^°C	-13.3 ^°C	45 ^%	1024.7 hPa	16.1 ^km	NNW (340°)	20.4 ^km/h	42.6 ^km/h	Clear
11:52 AM	-1.7 ^°C	-13.9 ^°C	40 ^%	1024.4 hPa	16.1 ^km	NW (320°)	25.9 ^km/h	38.9 ^km/h	Clear
12:52 PM	-0.6 ^°C	-13.3 ^°C	38 ^%	1024 hPa	16.1 ^km	NW (310°)	27.8 ^km/h	37 ^km/h	Clear
1:52 PM	0.6 ^°C	-13.9 ^°C	34 ^%	1024 hPa	16.1 ^km	NNW (330°)	27.8 ^km/h	38.9 ^km/h	Clear
2:52 PM	1 ^°C	-14 ^°C	32 ^%	1023.7 hPa	16.1 ^km	NW (320°)	27.8 ^km/h	38.9 ^km/h	Clear
3:52 PM	1.7 ^°C	-13.3 ^°C	33 ^%	1024.4 hPa	16.1 ^km	NW (320°)	20.4 ^km/h		Clear
4:52 PM	1 ^°C	-14 ^°C	32 ^%	1024.7 hPa	16.1 ^km	NW (320°)	22.2 ^km/h		Clear
5:52 PM	-0.6 ^°C	-13.3 ^°C	38 ^%	1025.7 hPa	16.1 ^km	NNW (340°)	13 ^km/h		Partly Cloudy
6:52 PM	-2 ^°C	-14 ^°C	40 ^%	1025.7 hPa	16.1 ^km	NNW (330°)	9.3 ^km/h		Partly Cloudy
7:52 PM	-2.2 ^°C	-14.4 ^°C	39 ^%	1026.8 hPa	16.1 ^km	NNW (330°)	11.1 ^km/h		Clear
8:52 PM	-3.3 ^°C	-14.4 ^°C	43 ^%	1027.4 hPa	16.1 ^km	NW (320°)	7.4 ^km/h		Clear
9:52 PM	-3.3 ^°C	-14.4 ^°C	43 ^%	1027.4 hPa	16.1 ^km	NNW (330°)	7.4 ^km/h		Clear
10:52 PM	-7.2 ^°C	-12.8 ^°C	65 ^%	1028.1 hPa	16.1 ^km	Calm			Clear
11:52 PM	-6.1 ^°C	-13.9 ^°C	55 ^%	1028.1 hPa	16.1 ^km	NW (320°)	5.6 ^km/h		Clear

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