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 - 4 JULY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	21.9 ^°C	26.1 ^°C (1:52 pm)	20 ^°C (8:44 am)
Dewpoint	19.7 ^°C	21.1 ^°C (5:52 pm)	18 ^°C (2:21 am)
Humidity	87.4 ^%	100 ^% (10:10 pm)	69 ^% (2:41 pm)
Barometer	1013.5 ^hPa	1017.3 hPa (11:28 pm)	1011.9 hPa (4:52 am)
Wind Speed	2.7 ^km/h	20.4 ^km/h (4:14 pm)
Wind Gust		51.8 ^km/h (4:14 pm)

Weather Element	Average
Visibility	10.9 ^km
Wind Direction	ENE (60.3 °)

Weather Element	Total
Precipitation	46.48 ^mm
Cooling Degree Days	4.7 (Base 18.3)
Growing Degree Days	13.1 (Base 10)

Averaged from 40 records on 4 July, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 4 JULY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	20.6 ^°C	18.3 ^°C	87 ^%	1013.2 hPa	14.5 ^km	Calm			0 mm	Rain	Light Rain
1:52 AM	20.6 ^°C	18.3 ^°C	87 ^%	1012.9 hPa	14.5 ^km	Calm			0 mm		Mostly Cloudy
2:21 AM	21 ^°C	18 ^°C	83 ^%	1012.9 hPa	14.5 ^km	Calm					Overcast
2:52 AM	20.6 ^°C	18.9 ^°C	90 ^%	1012.5 hPa	12.9 ^km	Calm					Overcast
3:20 AM	21 ^°C	18 ^°C	83 ^%	1012.5 hPa	12.9 ^km	Calm					Overcast
3:52 AM	20.6 ^°C	18.3 ^°C	87 ^%	1012.2 hPa	12.9 ^km	Calm					Overcast
4:16 AM	21 ^°C	19 ^°C	88 ^%	1012.2 hPa	12.9 ^km	Calm					Overcast
4:52 AM	21.1 ^°C	18.9 ^°C	87 ^%	1011.9 hPa	12.9 ^km	Calm					Overcast
5:07 AM	21 ^°C	19 ^°C	88 ^%	1012.2 hPa	11.3 ^km	Calm					Overcast
5:34 AM	21 ^°C	19 ^°C	88 ^%	1012.2 hPa	11.3 ^km	Calm					Overcast
5:52 AM	20.6 ^°C	18.9 ^°C	90 ^%	1011.9 hPa	11.3 ^km	Calm					Overcast
6:52 AM	20.6 ^°C	19.4 ^°C	93 ^%	1012.2 hPa	9.7 ^km	Calm					Overcast
7:52 AM	21.1 ^°C	19.4 ^°C	90 ^%	1012.2 hPa	6.4 ^km	ESE (120°)	5.6 ^km/h		0 mm		Overcast
8:11 AM	21 ^°C	20 ^°C	94 ^%	1012.9 hPa	1.6 ^km	SSE (160°)	5.6 ^km/h		0.25 mm	Rain	Rain
8:44 AM	20 ^°C	18 ^°C	88 ^%	1013.2 hPa	4.8 ^km	Calm			1.78 mm	Rain	Rain
8:52 AM	20 ^°C	18.9 ^°C	93 ^%	1012.9 hPa	2.4 ^km	Calm			3.81 mm	Rain	Heavy Rain
9:16 AM	20 ^°C	19 ^°C	94 ^%	1013.2 hPa	4 ^km	Calm			3.81 mm	Rain	Light Rain
9:40 AM	21 ^°C	20 ^°C	94 ^%	1013.2 hPa	8 ^km	Calm			3.81 mm		Overcast
9:52 AM	21.1 ^°C	20 ^°C	93 ^%	1012.9 hPa	8 ^km	Calm			3.81 mm		Overcast
10:52 AM	22.2 ^°C	20.6 ^°C	91 ^%	1012.9 hPa	16.1 ^km	Variable	9.3 ^km/h				Overcast
11:22 AM	23 ^°C	21 ^°C	88 ^%	1012.9 hPa	16.1 ^km	Calm					Overcast
11:52 AM	23.3 ^°C	20.6 ^°C	85 ^%	1012.9 hPa	16.1 ^km	South (190°)	5.6 ^km/h				Overcast
12:50 PM	25 ^°C	21 ^°C	78 ^%	1012.9 hPa	16.1 ^km	Calm					Overcast
12:52 PM	25 ^°C	20.6 ^°C	76 ^%	1012.9 hPa	16.1 ^km	Calm					Overcast
1:52 PM	26.1 ^°C	20.6 ^°C	72 ^%	1012.5 hPa	16.1 ^km	SSW (200°)	9.3 ^km/h				Mostly Cloudy
2:41 PM	26 ^°C	20 ^°C	69 ^%	1012.5 hPa	16.1 ^km	SW (220°)	5.6 ^km/h				Mostly Cloudy
2:52 PM	26.1 ^°C	20 ^°C	69 ^%	1012.2 hPa	16.1 ^km	Calm					Mostly Cloudy
3:52 PM	23.9 ^°C	18.3 ^°C	71 ^%	1012.9 hPa	16.1 ^km	North (360°)	7.4 ^km/h	37 ^km/h	0 mm		Overcast
4:14 PM	22 ^°C	19 ^°C	83 ^%	1014.2 hPa	0.3 ^km	NW (320°)	20.4 ^km/h	51.8 ^km/h	0.76 mm	Rain	Heavy Rain
4:39 PM	21 ^°C	20 ^°C	94 ^%	1013.2 hPa	8 ^km	Calm			14.22 mm	Rain-Thunderstorm	Light Thunderstorms and Rain
4:52 PM	21.1 ^°C	20.6 ^°C	97 ^%	1013.2 hPa	16.1 ^km	SSE (160°)	5.6 ^km/h		14.22 mm		Mostly Cloudy
5:52 PM	23.9 ^°C	21.1 ^°C	84 ^%	1013.5 hPa	16.1 ^km	NNW (340°)	5.6 ^km/h				Overcast
6:52 PM	23.9 ^°C	20.6 ^°C	82 ^%	1013.5 hPa	16.1 ^km	ENE (60°)	5.6 ^km/h				Overcast
7:52 PM	22.8 ^°C	21.1 ^°C	90 ^%	1014.6 hPa	16.1 ^km	SE (130°)	5.6 ^km/h				Mostly Cloudy
9:52 PM	21.7 ^°C	20.6 ^°C	93 ^%	1015.9 hPa	16.1 ^km	Calm					Mostly Cloudy
10:10 PM	21 ^°C	21 ^°C	100 ^%	1016.3 hPa	6.4 ^km	Calm				Fog	Mostly Cloudy
10:30 PM	21 ^°C	20 ^°C	94 ^%	1016.6 hPa	3.2 ^km	East (100°)	5.6 ^km/h			Fog	Mostly Cloudy
10:52 PM	21.1 ^°C	20.6 ^°C	97 ^%	1016.6 hPa	2.4 ^km	Calm					Mostly Cloudy
11:28 PM	22 ^°C	21 ^°C	94 ^%	1017.3 hPa	3.2 ^km	NE (40°)	5.6 ^km/h				Overcast
11:52 PM	21.7 ^°C	20.6 ^°C	93 ^%	1017.3 hPa	3.2 ^km	North (10°)	7.4 ^km/h				Overcast

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