ROCK ISLAND, ILLINOIS

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Elevation: 190 meters Latitude: 41 34N Longitude: 090 25W

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DAILY WEATHER AVERAGE - 15 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-1.6 ^°C	2.2 ^°C	-5.3 ^°C	11 ^°C (2011)	-17.2 ^°C (2009)
Dewpoint	-4.9 ^°C	-1.6 ^°C	-7.6 ^°C	8 ^°C (2011)	-21.7 ^°C (2004)
Humidity	79 ^%	88.9 ^%	68.9 ^%		33 ^% (2004)
Barometer	1016.3 ^hPa	1022.4 ^hPa	1010.8 ^hPa	1040.3 ^hPa (2008)	999 ^hPa (2003)
Wind Speed	21.6 ^km/h	32.8 ^km/h		44.4 ^km/h (2011)
Wind Gust		47.8 ^km/h		61.2 ^km/h (2008)
Precipitation	5.84 ^mm			25.91 ^mm (2012)

Weather Element	Average
Visibility	10.9 ^km
Wind Direction	SSW (204.9 °)

Weather Element	Total
Heating Degree Days	19.9 (Base 18.3)

Total Years on Record: 19

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