DULLES, VIRGINIA

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Elevation: 290 feet 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 - MAY 23, 2015

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	60.7 ^°F	72 ^°F (4:52 pm)	43 ^°F (4:52 am)
Dewpoint	34.6 ^°F	45 ^°F (11:52 pm)	26.6 ^°F (10:52 am)
Humidity	39.5 ^%	74 ^% (4:52 am)	26 ^% (10:52 am)
Barometer	30.39 ⁱⁿ	30.48 ⁱⁿ (9:52 am)	30.28 ⁱⁿ (12:52 am)
Wind Speed	4.5 ^mph	9.2 ^mph (3:52 pm)

Weather Element	Average
Visibility	10 ^mi
Wind Direction	SSE (166.3 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	7.5 (Base 65)
Growing Degree Days	7.5 (Base 50)

Averaged from 24 records on May 23, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - MAY 23, 2015

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:52 AM	57.9 ^°F	34.0 ^°F	41 ^%	30.28 ⁱⁿ	10.0 ^mi	NW (320°)	5.8 ^mph	Clear
1:52 AM	55.9 ^°F	30.9 ^°F	39 ^%	30.30 ⁱⁿ	10.0 ^mi	NNW (340°)	6.9 ^mph	Clear
2:52 AM	54.0 ^°F	30.9 ^°F	41 ^%	30.32 ⁱⁿ	10.0 ^mi	NNW (330°)	6.9 ^mph	Clear
3:52 AM	48.9 ^°F	34.0 ^°F	56 ^%	30.35 ⁱⁿ	10.0 ^mi	Calm		Clear
4:52 AM	43.0 ^°F	35.1 ^°F	74 ^%	30.37 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
5:52 AM	48.0 ^°F	30.9 ^°F	52 ^%	30.39 ⁱⁿ	10.0 ^mi	Calm		Mostly Cloudy
6:52 AM	51.1 ^°F	28.9 ^°F	43 ^%	30.42 ⁱⁿ	10.0 ^mi	NW (320°)	6.9 ^mph	Mostly Cloudy
7:52 AM	53.1 ^°F	30.0 ^°F	41 ^%	30.44 ⁱⁿ	10.0 ^mi	North (360°)	3.5 ^mph	Scattered Clouds
8:52 AM	57.9 ^°F	30.9 ^°F	36 ^%	30.45 ⁱⁿ	10.0 ^mi	NNW (330°)	6.9 ^mph	Partly Cloudy
9:52 AM	61.0 ^°F	27.0 ^°F	27 ^%	30.48 ⁱⁿ	10.0 ^mi	Variable	3.5 ^mph	Scattered Clouds
10:52 AM	62.6 ^°F	26.6 ^°F	26 ^%	30.48 ⁱⁿ	10.0 ^mi	Calm		Scattered Clouds
11:52 AM	63.0 ^°F	30.0 ^°F	29 ^%	30.47 ⁱⁿ	10.0 ^mi	ENE (70°)	3.5 ^mph	Partly Cloudy
12:52 PM	66.0 ^°F	32.0 ^°F	28 ^%	30.45 ⁱⁿ	10.0 ^mi	Variable	5.8 ^mph	Partly Cloudy
1:52 PM	68.0 ^°F	34.0 ^°F	28 ^%	30.43 ⁱⁿ	10.0 ^mi	Variable	4.6 ^mph	Partly Cloudy
2:52 PM	70.0 ^°F	34.0 ^°F	27 ^%	30.41 ⁱⁿ	10.0 ^mi	NW (310°)	6.9 ^mph	Partly Cloudy
3:52 PM	71.1 ^°F	35.1 ^°F	27 ^%	30.40 ⁱⁿ	10.0 ^mi	WNW (290°)	9.2 ^mph	Partly Cloudy
4:52 PM	72.0 ^°F	35.1 ^°F	26 ^%	30.38 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
5:52 PM	72.0 ^°F	39.9 ^°F	31 ^%	30.37 ⁱⁿ	10.0 ^mi	SW (230°)	6.9 ^mph	Partly Cloudy
6:52 PM	71.1 ^°F	37.9 ^°F	30 ^%	30.36 ⁱⁿ	10.0 ^mi	SW (220°)	4.6 ^mph	Partly Cloudy
7:52 PM	66.0 ^°F	43.0 ^°F	43 ^%	30.36 ⁱⁿ	10.0 ^mi	SSW (210°)	4.6 ^mph	Partly Cloudy
8:52 PM	63.0 ^°F	41.0 ^°F	45 ^%	30.36 ⁱⁿ	10.0 ^mi	SSE (150°)	3.5 ^mph	Partly Cloudy
9:52 PM	61.0 ^°F	41.0 ^°F	48 ^%	30.37 ⁱⁿ	10.0 ^mi	SSE (160°)	4.6 ^mph	Partly Cloudy
10:52 PM	60.1 ^°F	42.1 ^°F	51 ^%	30.38 ⁱⁿ	10.0 ^mi	South (170°)	5.8 ^mph	Clear
11:52 PM	59.0 ^°F	45.0 ^°F	60 ^%	30.38 ⁱⁿ	10.0 ^mi	South (180°)	6.9 ^mph	Clear

Hourly data recorded from KIAD, located miles away from Dulles, Virginia