DULLES, VIRGINIA

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Elevation: 88 meters Latitude: 38 57N Longitude: 077 27W

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DAILY WEATHER AVERAGE - 22 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	19.7 ^°C	25.6 ^°C	14.4 ^°C	34 ^°C (2010)	3.3 ^°C (1997)
Dewpoint	14.3 ^°C	16.8 ^°C	10.7 ^°C	22.2 ^°C (1998)	3.3 ^°C (2004)
Humidity	73.7 ^%	93.6 ^%	48.6 ^%		25 ^% (2004)
Barometer	1017.9 ^hPa	1020.7 ^hPa	1015.2 ^hPa	1028.8 ^hPa (2008)	1005.1 ^hPa (1996)
Wind Speed	10.6 ^km/h	21.6 ^km/h		35.2 ^km/h (1999)
Wind Gust		35.6 ^km/h		50.1 ^km/h (2014)
Precipitation	8.13 ^mm			42.16 ^mm (2003)

Weather Element	Average
Visibility	13.8 ^km
Wind Direction	SSW (213 °)

Total Years on Record: 20

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