ROCK ISLAND, WASHINGTON

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

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DAILY WEATHER AVERAGE - 3 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	20.2 ^°C	26.8 ^°C	13.7 ^°C	34 ^°C (1998)	8 ^°C (2000)
Dewpoint	6.6 ^°C	9.5 ^°C	3.9 ^°C	14 ^°C (1998)	-1.7 ^°C (2011)
Humidity	44.2 ^%	63.7 ^%	27.3 ^%		16 ^% (2011)
Barometer	1013.9 ^hPa	1016.3 ^hPa	1010.8 ^hPa	1024.4 ^hPa (2011)	1004.1 ^hPa (1998)
Wind Speed	13.2 ^km/h	26.7 ^km/h		44.4 ^km/h (2009)
Wind Gust		42.3 ^km/h		59.2 ^km/h (1996)
Precipitation	0.51 ^mm			0.76 ^mm (1997)

Weather Element	Average
Visibility	15.9 ^km
Wind Direction	WSW (246.3 °)

Total Years on Record: 20

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