RICHLAND, WASHINGTON

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Elevation: 119 meters Latitude: 46 18N Longitude: 119 18W

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DAILY WEATHER AVERAGE - 15 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	2.8 ^°C	6.7 ^°C	-1.7 ^°C	15 ^°C (1999)	-15.6 ^°C (2008)
Dewpoint	-1 ^°C	1.2 ^°C	-3.9 ^°C	7.8 ^°C (1999)	-18.3 ^°C (2006)
Humidity	77.8 ^%	92.2 ^%	59.8 ^%		37 ^% (2006)
Barometer	1021 ^hPa	1025.1 ^hPa	1016.3 ^hPa	1038.3 ^hPa (2004)	989.2 ^hPa (2002)
Wind Speed	13 ^km/h	27 ^km/h		61.2 ^km/h (2006)
Wind Gust		52.8 ^km/h		85.1 ^km/h (2006)
Precipitation	3.81 ^mm			9.4 ^mm (2009)

Weather Element	Average
Visibility	19.3 ^km
Wind Direction	SSE (165.8 °)

Weather Element	Total
Heating Degree Days	15.9 (Base 18.3)
Growing Degree Days	1.4 (Base 10)

Total Years on Record: 21

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