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 - 29 JANUARY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	-2.6 ^°C	2.2 ^°C (9:52 pm)	-10 ^°C (5:52 am)
Dewpoint	-9.5 ^°C	-4.4 ^°C (4:52 pm)	-12.8 ^°C (12:52 am)
Humidity	61.8 ^%	88 ^% (5:52 am)	38 ^% (1:52 pm)
Barometer	1022 ^hPa	1027.8 hPa (12:52 am)	1013.2 hPa (11:52 pm)
Wind Speed	8.9 ^km/h	18.5 ^km/h (1:52 pm)
Wind Gust		25.9 ^km/h (12:52 pm)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	ESE (125.6 °)

Weather Element	Total
Precipitation	1.27 ^mm
Heating Degree Days	22.2 (Base 18.3)

Averaged from 25 records on 29 January, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 29 JANUARY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	-6.1 ^°C	-12.8 ^°C	60 ^%	1027.8 hPa	16.1 ^km	North (350°)	5.6 ^km/h				Clear
1:52 AM	-8.3 ^°C	-12.2 ^°C	74 ^%	1027.8 hPa	16.1 ^km	Calm					Clear
2:52 AM	-8.9 ^°C	-12.2 ^°C	77 ^%	1027.8 hPa	16.1 ^km	Calm					Clear
3:52 AM	-9.4 ^°C	-12.2 ^°C	80 ^%	1027.8 hPa	16.1 ^km	Calm					Partly Cloudy
4:52 AM	-9.4 ^°C	-12.2 ^°C	80 ^%	1027.4 hPa	16.1 ^km	Calm					Scattered Clouds
5:52 AM	-10 ^°C	-11.7 ^°C	88 ^%	1027.1 hPa	16.1 ^km	Calm					Scattered Clouds
6:52 AM	-9.4 ^°C	-11.7 ^°C	84 ^%	1026.8 hPa	16.1 ^km	Calm					Scattered Clouds
7:52 AM	-7.2 ^°C	-10.6 ^°C	77 ^%	1026.4 hPa	16.1 ^km	ESE (110°)	7.4 ^km/h				Mostly Cloudy
8:52 AM	-5.6 ^°C	-10 ^°C	72 ^%	1026.4 hPa	16.1 ^km	Calm					Mostly Cloudy
9:52 AM	-3.9 ^°C	-10.6 ^°C	60 ^%	1026.4 hPa	16.1 ^km	SSW (210°)	9.3 ^km/h				Mostly Cloudy
10:52 AM	-1.7 ^°C	-11.7 ^°C	47 ^%	1025.1 hPa	16.1 ^km	SSE (150°)	14.8 ^km/h				Overcast
11:52 AM	-0.6 ^°C	-11.7 ^°C	43 ^%	1023.7 hPa	16.1 ^km	SSE (160°)	14.8 ^km/h				Overcast
12:52 PM	0 ^°C	-12 ^°C	41 ^%	1021.7 hPa	16.1 ^km	SSE (150°)	16.7 ^km/h	25.9 ^km/h			Overcast
1:52 PM	1.1 ^°C	-11.7 ^°C	38 ^%	1020.3 hPa	16.1 ^km	SSE (150°)	18.5 ^km/h				Overcast
2:52 PM	1.1 ^°C	-10.6 ^°C	42 ^%	1019.6 hPa	16.1 ^km	SSE (160°)	14.8 ^km/h				Overcast
3:36 PM	2 ^°C	-11 ^°C	38 ^%	1019 hPa	16.1 ^km	SSE (160°)	13 ^km/h		0 mm		Light Ice Pellets
3:52 PM	1.1 ^°C	-8.9 ^°C	48 ^%	1019 hPa	16.1 ^km	SSE (160°)	13 ^km/h		0 mm	Rain	Light Rain
4:52 PM	0 ^°C	-4.4 ^°C	73 ^%	1018.6 hPa	16.1 ^km	SE (140°)	11.1 ^km/h		1.27 mm		Overcast
5:52 PM	0 ^°C	-4.4 ^°C	73 ^%	1017.9 hPa	16.1 ^km	SE (140°)	7.4 ^km/h				Overcast
6:52 PM	0.6 ^°C	-5 ^°C	66 ^%	1017.3 hPa	16.1 ^km	SSE (160°)	11.1 ^km/h				Overcast
7:52 PM	1.1 ^°C	-6.7 ^°C	56 ^%	1016.3 hPa	16.1 ^km	South (170°)	14.8 ^km/h				Overcast
8:52 PM	1.7 ^°C	-6.1 ^°C	57 ^%	1015.2 hPa	16.1 ^km	South (170°)	16.7 ^km/h				Overcast
9:52 PM	2.2 ^°C	-6.1 ^°C	55 ^%	1014.2 hPa	16.1 ^km	South (180°)	13 ^km/h				Overcast
10:52 PM	1.7 ^°C	-5.6 ^°C	59 ^%	1013.9 hPa	16.1 ^km	SSW (210°)	11.1 ^km/h				Overcast
11:52 PM	2.2 ^°C	-5.6 ^°C	57 ^%	1013.2 hPa	16.1 ^km	SSW (210°)	7.4 ^km/h				Overcast

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