ROCK FALLS, ILLINOIS

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Elevation: 207 meters Latitude: 41 48N Longitude: 089 38W

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DAILY WEATHER AVERAGE - 17 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-4.1 ^°C	-0.5 ^°C	-7.9 ^°C	9 ^°C (2006)	(2000)
Dewpoint	-7.2 ^°C	-4.6 ^°C	-9.3 ^°C	7 ^°C (2006)	-14 ^°C (2004)
Humidity	75.9 ^%	88.9 ^%	62.9 ^%		48 ^% (2004)
Barometer	1018.6 ^hPa	1022 ^hPa	1014.6 ^hPa	1035.2 ^hPa (2005)	1004.4 ^hPa (2002)
Wind Speed	14.6 ^km/h	25.9 ^km/h		40.7 ^km/h (2000)
Wind Gust		38.9 ^km/h		53.8 ^km/h (2002)
Precipitation	194.31 ^mm			194.31 ^mm (2004)

Weather Element	Average
Visibility	14.2 ^km
Wind Direction	SSW (199 °)

Weather Element	Total
Heating Degree Days	22.6 (Base 18.3)

Total Years on Record: 21

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