ROCK ISLAND, ILLINOIS

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Elevation: 622 feet Latitude: 41 34N Longitude: 090 25W

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DAILY WEATHER AVERAGE - DECEMBER 15

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	29.1 ^°F	35.9 ^°F	22.4 ^°F	51.8 ^°F (2011)	1 ^°F (2009)
Dewpoint	23.1 ^°F	29.2 ^°F	18.4 ^°F	46.4 ^°F (2011)	-7.1 ^°F (2004)
Humidity	79 ^%	88.9 ^%	68.9 ^%		33 ^% (2004)
Barometer	30.01 ⁱⁿ	30.19 ⁱⁿ	29.85 ⁱⁿ	30.72 ⁱⁿ (2008)	29.50 ⁱⁿ (2003)
Wind Speed	13.4 ^mph	20.4 ^mph		27.6 ^mph (2011)
Wind Gust		29.7 ^mph		38 ^mph (2008)
Precipitation	0.23 ⁱⁿ			1.02 ⁱⁿ (2012)

Weather Element	Average
Visibility	6.8 ^mi
Wind Direction	SSW (204.9 °)

Weather Element	Total
Heating Degree Days	35.9 (Base 18.3)

Total Years on Record: 19

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