UPPER MARLBORO, MARYLAND

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Elevation: 28 meters Latitude: 38 52N Longitude: 076 47W

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DAILY WEATHER AVERAGE - 18 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	3 ^°C	7.3 ^°C	-1.5 ^°C	22.1 ^°C (2006)	-9.1 ^°C (2010)
Dewpoint	-2.4 ^°C	0.5 ^°C	-5.6 ^°C	14 ^°C (2001)	-11 ^°C (1998)
Humidity	70.3 ^%	89.1 ^%	48.7 ^%		29 ^% (1998)
Barometer	1020 ^hPa	1024 ^hPa	1016.3 ^hPa	1034.5 ^hPa (2005)	992.6 ^hPa (2001)
Wind Speed	11.6 ^km/h	22 ^km/h		46.3 ^km/h (2001)
Wind Gust		46.8 ^km/h		61.2 ^km/h (2012)
Precipitation	1.52 ^mm			2.54 ^mm (2009)

Weather Element	Average
Visibility	12.7 ^km
Wind Direction	S (180.9 °)

Weather Element	Total
Heating Degree Days	15.4 (Base 18.3)
Growing Degree Days	2.9 (Base 10)

Total Years on Record: 20

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