SUNNYSIDE, WASHINGTON

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Elevation: 225 meters Latitude: 46 19N Longitude: 120 00W

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DAILY WEATHER AVERAGE - 18 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-0.3 ^°C	2.5 ^°C	-3.5 ^°C	13 ^°C (1999)	-13.1 ^°C (2005)
Dewpoint	-3.6 ^°C	-1.6 ^°C	-6.1 ^°C	3.9 ^°C (1997)	-16.7 ^°C (1998)
Humidity	81.3 ^%	91.4 ^%	67.4 ^%		34 ^% (1998)
Barometer	1022.7 ^hPa	1027.1 ^hPa	1018.6 ^hPa	1040 ^hPa (2000)	1001.7 ^hPa (2010)
Wind Speed	10.9 ^km/h	18.7 ^km/h		40.7 ^km/h (1999)
Wind Gust		55.5 ^km/h		55.5 ^km/h (1999)
Precipitation	---			--- ()

Weather Element	Average
Visibility	18.5 ^km
Wind Direction	WSW (240.3 °)

Weather Element	Total
Heating Degree Days	18.9 (Base 18.3)
Growing Degree Days	1.3 (Base 10)

Total Years on Record: 18

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