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 - 23 MAY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	15.9 ^°C	22.2 ^°C (4:52 pm)	6.1 ^°C (4:52 am)
Dewpoint	1.4 ^°C	7.2 ^°C (11:52 pm)	-3 ^°C (10:52 am)
Humidity	39.5 ^%	74 ^% (4:52 am)	26 ^% (10:52 am)
Barometer	1029.1 ^hPa	1032.2 hPa (9:52 am)	1025.4 hPa (12:52 am)
Wind Speed	7.2 ^km/h	14.8 ^km/h (3:52 pm)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	SSE (166.3 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	4.2 (Base 18.3)
Growing Degree Days	4.2 (Base 10)

Averaged from 24 records on 23 May, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 23 MAY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:52 AM	14.4 ^°C	1.1 ^°C	41 ^%	1025.4 hPa	16.1 ^km	NW (320°)	9.3 ^km/h	Clear
1:52 AM	13.3 ^°C	-0.6 ^°C	39 ^%	1026.1 hPa	16.1 ^km	NNW (340°)	11.1 ^km/h	Clear
2:52 AM	12.2 ^°C	-0.6 ^°C	41 ^%	1026.8 hPa	16.1 ^km	NNW (330°)	11.1 ^km/h	Clear
3:52 AM	9.4 ^°C	1.1 ^°C	56 ^%	1027.8 hPa	16.1 ^km	Calm		Clear
4:52 AM	6.1 ^°C	1.7 ^°C	74 ^%	1028.4 hPa	16.1 ^km	Calm		Partly Cloudy
5:52 AM	8.9 ^°C	-0.6 ^°C	52 ^%	1029.1 hPa	16.1 ^km	Calm		Mostly Cloudy
6:52 AM	10.6 ^°C	-1.7 ^°C	43 ^%	1030.1 hPa	16.1 ^km	NW (320°)	11.1 ^km/h	Mostly Cloudy
7:52 AM	11.7 ^°C	-1.1 ^°C	41 ^%	1030.8 hPa	16.1 ^km	North (360°)	5.6 ^km/h	Scattered Clouds
8:52 AM	14.4 ^°C	-0.6 ^°C	36 ^%	1031.2 hPa	16.1 ^km	NNW (330°)	11.1 ^km/h	Partly Cloudy
9:52 AM	16.1 ^°C	-2.8 ^°C	27 ^%	1032.2 hPa	16.1 ^km	Variable	5.6 ^km/h	Scattered Clouds
10:52 AM	17 ^°C	-3 ^°C	26 ^%	1032.2 hPa	16.1 ^km	Calm		Scattered Clouds
11:52 AM	17.2 ^°C	-1.1 ^°C	29 ^%	1031.8 hPa	16.1 ^km	ENE (70°)	5.6 ^km/h	Partly Cloudy
12:52 PM	18.9 ^°C	0 ^°C	28 ^%	1031.2 hPa	16.1 ^km	Variable	9.3 ^km/h	Partly Cloudy
1:52 PM	20 ^°C	1.1 ^°C	28 ^%	1030.5 hPa	16.1 ^km	Variable	7.4 ^km/h	Partly Cloudy
2:52 PM	21.1 ^°C	1.1 ^°C	27 ^%	1029.8 hPa	16.1 ^km	NW (310°)	11.1 ^km/h	Partly Cloudy
3:52 PM	21.7 ^°C	1.7 ^°C	27 ^%	1029.5 hPa	16.1 ^km	WNW (290°)	14.8 ^km/h	Partly Cloudy
4:52 PM	22.2 ^°C	1.7 ^°C	26 ^%	1028.8 hPa	16.1 ^km	Calm		Partly Cloudy
5:52 PM	22.2 ^°C	4.4 ^°C	31 ^%	1028.4 hPa	16.1 ^km	SW (230°)	11.1 ^km/h	Partly Cloudy
6:52 PM	21.7 ^°C	3.3 ^°C	30 ^%	1028.1 hPa	16.1 ^km	SW (220°)	7.4 ^km/h	Partly Cloudy
7:52 PM	18.9 ^°C	6.1 ^°C	43 ^%	1028.1 hPa	16.1 ^km	SSW (210°)	7.4 ^km/h	Partly Cloudy
8:52 PM	17.2 ^°C	5 ^°C	45 ^%	1028.1 hPa	16.1 ^km	SSE (150°)	5.6 ^km/h	Partly Cloudy
9:52 PM	16.1 ^°C	5 ^°C	48 ^%	1028.4 hPa	16.1 ^km	SSE (160°)	7.4 ^km/h	Partly Cloudy
10:52 PM	15.6 ^°C	5.6 ^°C	51 ^%	1028.8 hPa	16.1 ^km	South (170°)	9.3 ^km/h	Clear
11:52 PM	15 ^°C	7.2 ^°C	60 ^%	1028.8 hPa	16.1 ^km	South (180°)	11.1 ^km/h	Clear

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