POTOMAC, MARYLAND

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Elevation: 8 meters Latitude: 39 02N Longitude: 077 15W

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DAILY WEATHER AVERAGE - 27 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	4.8 ^°C	9.9 ^°C	0.3 ^°C	20 ^°C (2015)	-6 ^°C (2013)
Dewpoint	-0.7 ^°C	3.4 ^°C	-3.8 ^°C	16 ^°C (2015)	-16 ^°C (2013)
Humidity	71 ^%	90.9 ^%	49.9 ^%		27 ^% (2010)
Barometer	1016.9 ^hPa	1023.4 ^hPa	1011.2 ^hPa	1030.8 ^hPa (2013)	996.6 ^hPa (2011)
Wind Speed	11.1 ^km/h	23 ^km/h		42.6 ^km/h (2010)
Wind Gust		41.8 ^km/h		76 ^km/h (2012)
Precipitation	16.26 ^mm			32 ^mm (2011)

Weather Element	Average
Visibility	14.3 ^km
Wind Direction	SSW (189 °)

Weather Element	Total
Heating Degree Days	13.2 (Base 18.3)
Growing Degree Days	4.5 (Base 10)

Total Years on Record: 9

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