ROCK ISLAND, WASHINGTON

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Elevation: 375 meters Latitude: 47 24N Longitude: 120 12W

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DAILY WEATHER AVERAGE - 20 FEBRUARY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	3 ^°C	7.6 ^°C	-0.9 ^°C	16.1 ^°C (2015)	-7.2 ^°C (2006)
Dewpoint	-2.8 ^°C	-0.9 ^°C	-4.8 ^°C	6.6 ^°C (1995)	-11.7 ^°C (2005)
Humidity	68.1 ^%	85.6 ^%	47.8 ^%		25 ^% (2005)
Barometer	1017.3 ^hPa	1020 ^hPa	1012.9 ^hPa	1029.8 ^hPa (1997)	988.8 ^hPa (1996)
Wind Speed	9 ^km/h	20.1 ^km/h		40.7 ^km/h (2007)
Wind Gust		49.2 ^km/h		61.2 ^km/h (1998)
Precipitation	4.83 ^mm			4.83 ^mm (1999)

Weather Element	Average
Visibility	15.9 ^km
Wind Direction	SSE (165.6 °)

Weather Element	Total
Heating Degree Days	15 (Base 18.3)

Total Years on Record: 22

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