TYSON'S CORNER, VIRGINIA

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Elevation: 15 meters Latitude: 38 55N Longitude: 077 14W

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DAILY WEATHER AVERAGE - 31 JULY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	26.7 ^°C	31.2 ^°C	22.7 ^°C	37.8 ^°C (1999)	17.6 ^°C (1997)
Dewpoint	19.2 ^°C	21.4 ^°C	16.3 ^°C	24.4 ^°C (2000)	6.7 ^°C (2011)
Humidity	66 ^%	84.7 ^%	45.5 ^%		16 ^% (2011)
Barometer	1016.3 ^hPa	1018.3 ^hPa	1014.6 ^hPa	1026.1 ^hPa (2001)	1004.7 ^hPa (2008)
Wind Speed	12.4 ^km/h	23.2 ^km/h		38.9 ^km/h (2009)
Wind Gust		39.3 ^km/h		61.2 ^km/h (2009)
Precipitation	13.21 ^mm			30.48 ^mm (1998)

Weather Element	Average
Visibility	15.3 ^km
Wind Direction	SSE (172 °)

Weather Element	Total
Cooling Degree Days	8.6 (Base 18.3)
Growing Degree Days	16.9 (Base 10)

Total Years on Record: 21

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