CONCORD - MALLARD RESERVOIR, CALIFORNIA

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Elevation: 15 meters Latitude: 38 01N Longitude: 122 01W

WEATHER

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DAILY WEATHER AVERAGE - 19 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	8.7 ^°C	13.6 ^°C	4.3 ^°C	22.8 ^°C (1999)	-1.7 ^°C (2006)
Dewpoint	4 ^°C	6.6 ^°C	1 ^°C	13 ^°C (2010)	-7 ^°C (1997)
Humidity	76.7 ^%	94.7 ^%	53.2 ^%		19 ^% (1997)
Barometer	1018.6 ^hPa	1021.7 ^hPa	1016.3 ^hPa	1027.4 ^hPa (2008)	997.6 ^hPa (2010)
Wind Speed	7.7 ^km/h	19.2 ^km/h		33.3 ^km/h (2002)
Wind Gust		42.2 ^km/h		51.8 ^km/h (2010)
Precipitation	27.69 ^mm			83.57 ^mm (2010)

Weather Element	Average
Visibility	14.3 ^km
Wind Direction	ESE (115.6 °)

Weather Element	Total
Heating Degree Days	9.4 (Base 18.3)
Growing Degree Days	1.8 (Base 10)

Total Years on Record: 20

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