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 - 1 MAY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	13.1 ^°C	17.8 ^°C (5:52 pm)	11 ^°C (5:19 am)
Dewpoint	8.3 ^°C	11 ^°C (1:36 am)	6.1 ^°C (1:52 pm)
Humidity	74.2 ^%	94 ^% (1:36 am)	48 ^% (5:52 pm)
Barometer	1012.5 ^hPa	1015.2 hPa (10:52 pm)	1010.2 hPa (12:52 am)
Wind Speed	10.6 ^km/h	16.7 ^km/h (7:52 am)
Wind Gust		40.7 ^km/h (11:52 am)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	NE (48.1 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	3.9 (Base 18.3)
Growing Degree Days	4.4 (Base 10)

Averaged from 31 records on 1 May, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 1 MAY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	12.2 ^°C	10.6 ^°C	90 ^%	1010.2 hPa	16.1 ^km	North (10°)	13 ^km/h				Scattered Clouds
1:36 AM	12 ^°C	11 ^°C	94 ^%	1010.2 hPa	16.1 ^km	NNE (20°)	11.1 ^km/h				Mostly Cloudy
1:52 AM	12.2 ^°C	10.6 ^°C	90 ^%	1010.2 hPa	16.1 ^km	NNE (20°)	9.3 ^km/h				Mostly Cloudy
2:07 AM	12 ^°C	11 ^°C	94 ^%	1010.2 hPa	16.1 ^km	NNE (20°)	11.1 ^km/h				Mostly Cloudy
2:14 AM	12 ^°C	10 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NNE (20°)	14.8 ^km/h				Overcast
2:32 AM	12 ^°C	9 ^°C	82 ^%	1010.2 hPa	16.1 ^km	NNE (30°)	14.8 ^km/h				Overcast
2:52 AM	11.7 ^°C	9.4 ^°C	86 ^%	1010.2 hPa	16.1 ^km	NE (40°)	14.8 ^km/h		0 mm	Rain	Light Rain
3:52 AM	11.7 ^°C	9.4 ^°C	86 ^%	1010.2 hPa	14.5 ^km	NNE (20°)	13 ^km/h		0 mm	Rain	Light Rain
4:52 AM	11.1 ^°C	8.9 ^°C	86 ^%	1010.8 hPa	16.1 ^km	NNE (20°)	13 ^km/h		0 mm		Overcast
5:19 AM	11 ^°C	9 ^°C	88 ^%	1011.2 hPa	16.1 ^km	NNE (30°)	13 ^km/h				Overcast
5:46 AM	11 ^°C	9 ^°C	88 ^%	1011.5 hPa	16.1 ^km	NNE (20°)	13 ^km/h				Overcast
5:52 AM	11.1 ^°C	8.9 ^°C	86 ^%	1011.5 hPa	16.1 ^km	NNE (20°)	13 ^km/h				Overcast
6:52 AM	11.1 ^°C	8.9 ^°C	86 ^%	1012.2 hPa	16.1 ^km	North (10°)	13 ^km/h				Overcast
7:27 AM	11 ^°C	9 ^°C	88 ^%	1012.5 hPa	16.1 ^km	NE (40°)	11.1 ^km/h				Overcast
7:52 AM	11.7 ^°C	8.3 ^°C	80 ^%	1012.9 hPa	16.1 ^km	NE (50°)	16.7 ^km/h				Overcast
8:52 AM	12.2 ^°C	8.3 ^°C	77 ^%	1013.9 hPa	16.1 ^km	NNE (20°)	14.8 ^km/h				Overcast
9:52 AM	12.8 ^°C	7.8 ^°C	72 ^%	1013.9 hPa	16.1 ^km	NE (40°)	13 ^km/h				Mostly Cloudy
10:52 AM	13 ^°C	7 ^°C	67 ^%	1014.6 hPa	16.1 ^km	NNE (20°)	13 ^km/h				Overcast
11:52 AM	13.9 ^°C	6.7 ^°C	62 ^%	1014.6 hPa	16.1 ^km	ESE (110°)	16.7 ^km/h	40.7 ^km/h			Overcast
12:52 PM	15 ^°C	6.7 ^°C	58 ^%	1014.6 hPa	16.1 ^km	North (10°)	5.6 ^km/h				Overcast
1:52 PM	16.1 ^°C	6.1 ^°C	52 ^%	1014.6 hPa	16.1 ^km	North (360°)	11.1 ^km/h				Overcast
2:52 PM	15.6 ^°C	6.1 ^°C	53 ^%	1014.2 hPa	16.1 ^km	Calm					Overcast
3:52 PM	15.6 ^°C	6.7 ^°C	55 ^%	1013.9 hPa	16.1 ^km	ENE (60°)	5.6 ^km/h				Overcast
4:52 PM	17.2 ^°C	7.2 ^°C	52 ^%	1013.2 hPa	16.1 ^km	NNE (20°)	9.3 ^km/h				Mostly Cloudy
5:52 PM	17.8 ^°C	6.7 ^°C	48 ^%	1013.2 hPa	16.1 ^km	NNE (20°)	9.3 ^km/h				Mostly Cloudy
6:52 PM	17.2 ^°C	7.2 ^°C	52 ^%	1013.2 hPa	16.1 ^km	ENE (60°)	11.1 ^km/h				Overcast
7:52 PM	16.1 ^°C	7.2 ^°C	56 ^%	1013.5 hPa	16.1 ^km	NE (50°)	7.4 ^km/h				Overcast
8:52 PM	13.9 ^°C	7.2 ^°C	64 ^%	1013.9 hPa	16.1 ^km	ESE (120°)	9.3 ^km/h				Overcast
9:52 PM	12.8 ^°C	7.2 ^°C	69 ^%	1014.9 hPa	16.1 ^km	Calm					Mostly Cloudy
10:52 PM	12 ^°C	7 ^°C	72 ^%	1015.2 hPa	16.1 ^km	Calm					Overcast
11:52 PM	11.1 ^°C	7.8 ^°C	80 ^%	1014.9 hPa	16.1 ^km	SW (230°)	5.6 ^km/h				Overcast

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