MCHENRY, MARYLAND

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Elevation: 82 meters Latitude: 39 35N Longitude: 079 22W

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DAILY WEATHER AVERAGE - 18 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-2.2 ^°C	0.8 ^°C	-4.7 ^°C	14 ^°C (2006)	-8 ^°C (2010)
Dewpoint	-4.8 ^°C	-1.2 ^°C	-5.9 ^°C	10 ^°C (2006)	-14 ^°C (2009)
Humidity	89.6 ^%	99.2 ^%	76.7 ^%		46 ^% (2009)
Barometer	1016.9 ^hPa	1019.6 ^hPa	1013.9 ^hPa	1024.4 ^hPa (2007)	999.3 ^hPa (2012)
Wind Speed	15 ^km/h	24.9 ^km/h		31.5 ^km/h (2009)
Wind Gust		40.6 ^km/h		50.1 ^km/h (2012)
Precipitation	---			--- ()

Weather Element	Average
Visibility	10.8 ^km
Wind Direction	WSW (236.6 °)

Weather Element	Total
Heating Degree Days	20.3 (Base 18.3)

Total Years on Record: 9

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