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 - 25 MAY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	22.8 ^°C	28.3 ^°C (4:52 pm)	16.7 ^°C (5:52 am)
Dewpoint	14 ^°C	15.6 ^°C (10:52 am)	12.8 ^°C (12:52 am)
Humidity	58.8 ^%	78 ^% (5:52 am)	44 ^% (4:52 pm)
Barometer	1023.7 ^hPa	1025.4 hPa (8:52 am)	1022 hPa (5:52 pm)
Wind Speed	15.9 ^km/h	27.8 ^km/h (1:52 pm)
Wind Gust		42.6 ^km/h (1:52 pm)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	SSW (187.9 °)

Weather Element	Total
Precipitation	---
Cooling Degree Days	4.2 (Base 18.3)
Growing Degree Days	12.5 (Base 10)

Averaged from 24 records on 25 May, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 25 MAY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Conditions
12:52 AM	19.4 ^°C	12.8 ^°C	66 ^%	1024.4 hPa	16.1 ^km	South (190°)	11.1 ^km/h		Clear
1:52 AM	18 ^°C	13 ^°C	73 ^%	1024.4 hPa	16.1 ^km	South (180°)	7.4 ^km/h		Clear
2:52 AM	18 ^°C	13 ^°C	73 ^%	1024 hPa	16.1 ^km	South (180°)	11.1 ^km/h		Clear
3:52 AM	17.2 ^°C	12.8 ^°C	75 ^%	1024 hPa	16.1 ^km	South (180°)	7.4 ^km/h		Clear
4:52 AM	17.2 ^°C	12.8 ^°C	75 ^%	1024 hPa	16.1 ^km	South (180°)	7.4 ^km/h		Clear
5:52 AM	16.7 ^°C	12.8 ^°C	78 ^%	1023.7 hPa	16.1 ^km	South (180°)	7.4 ^km/h		Partly Cloudy
6:52 AM	17.2 ^°C	13.3 ^°C	78 ^%	1024.7 hPa	16.1 ^km	South (180°)	13 ^km/h		Partly Cloudy
7:52 AM	18.3 ^°C	13.9 ^°C	75 ^%	1025.1 hPa	16.1 ^km	SSW (200°)	18.5 ^km/h		Partly Cloudy
8:52 AM	20.6 ^°C	14.4 ^°C	68 ^%	1025.4 hPa	16.1 ^km	South (190°)	14.8 ^km/h		Clear
9:52 AM	23 ^°C	15 ^°C	61 ^%	1025.1 hPa	16.1 ^km	SSW (200°)	11.1 ^km/h		Partly Cloudy
10:52 AM	25 ^°C	15.6 ^°C	56 ^%	1025.1 hPa	16.1 ^km	SSW (210°)	18.5 ^km/h	27.8 ^km/h	Partly Cloudy
11:52 AM	26.7 ^°C	15 ^°C	48 ^%	1024.4 hPa	16.1 ^km	SSW (210°)	25.9 ^km/h	38.9 ^km/h	Partly Cloudy
12:52 PM	27.8 ^°C	15 ^°C	45 ^%	1023.7 hPa	16.1 ^km	SSW (210°)	25.9 ^km/h	38.9 ^km/h	Scattered Clouds
1:52 PM	27.8 ^°C	15 ^°C	45 ^%	1023.4 hPa	16.1 ^km	South (190°)	27.8 ^km/h	42.6 ^km/h	Mostly Cloudy
2:52 PM	27.8 ^°C	15.6 ^°C	47 ^%	1022.7 hPa	16.1 ^km	South (180°)	20.4 ^km/h	42.6 ^km/h	Mostly Cloudy
3:52 PM	27.8 ^°C	15 ^°C	45 ^%	1022.4 hPa	16.1 ^km	South (190°)	25.9 ^km/h	38.9 ^km/h	Mostly Cloudy
4:52 PM	28.3 ^°C	15 ^°C	44 ^%	1022.4 hPa	16.1 ^km	SSW (210°)	18.5 ^km/h	29.6 ^km/h	Mostly Cloudy
5:52 PM	27.2 ^°C	14.4 ^°C	45 ^%	1022 hPa	16.1 ^km	South (180°)	25.9 ^km/h	37 ^km/h	Mostly Cloudy
6:52 PM	26.7 ^°C	13.9 ^°C	45 ^%	1022 hPa	16.1 ^km	South (190°)	22.2 ^km/h		Scattered Clouds
7:52 PM	25 ^°C	13.9 ^°C	50 ^%	1022 hPa	16.1 ^km	South (180°)	14.8 ^km/h		Mostly Cloudy
8:52 PM	24 ^°C	14 ^°C	53 ^%	1022.4 hPa	16.1 ^km	South (170°)	11.1 ^km/h		Mostly Cloudy
9:52 PM	23.3 ^°C	13.3 ^°C	53 ^%	1022.7 hPa	16.1 ^km	South (170°)	11.1 ^km/h		Scattered Clouds
10:52 PM	22.8 ^°C	13.3 ^°C	55 ^%	1022.7 hPa	16.1 ^km	South (180°)	14.8 ^km/h		Partly Cloudy
11:52 PM	21.7 ^°C	13.3 ^°C	59 ^%	1022.4 hPa	16.1 ^km	South (180°)	11.1 ^km/h		Clear

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