POTOMAC, MARYLAND

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

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DAILY WEATHER AVERAGE - 29 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	3.1 ^°C	5.6 ^°C	0 ^°C	11 ^°C (2007)	-8 ^°C (2009)
Dewpoint	-2.7 ^°C	0.8 ^°C	-6.2 ^°C	7 ^°C (2007)	-15 ^°C (2008)
Humidity	68.3 ^%	84.4 ^%	49.7 ^%		30 ^% (2008)
Barometer	1016.9 ^hPa	1022 ^hPa	1011.9 ^hPa	1032.2 ^hPa (2009)	1001.4 ^hPa (2013)
Wind Speed	9.2 ^km/h	25.6 ^km/h		42.6 ^km/h (2012)
Wind Gust		38.9 ^km/h		62.9 ^km/h (2012)
Precipitation	15.75 ^mm			45.21 ^mm (2013)

Weather Element	Average
Visibility	14.3 ^km
Wind Direction	SSW (186.5 °)

Weather Element	Total
Heating Degree Days	15.6 (Base 18.3)

Total Years on Record: 9

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