ROCK FALLS, ILLINOIS

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

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DAILY WEATHER AVERAGE - 8 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-2.9 ^°C	0.8 ^°C	-7.3 ^°C	9 ^°C (1999)	(2010)
Dewpoint	-6.4 ^°C	-2.9 ^°C	-6.7 ^°C	8 ^°C (1999)	-17 ^°C (2002)
Humidity	77.1 ^%	91 ^%	63.6 ^%		31 ^% (2002)
Barometer	1020.3 ^hPa	1025.1 ^hPa	1014.6 ^hPa	1037.6 ^hPa (2006)	986.5 ^hPa (2009)
Wind Speed	12.9 ^km/h	24.8 ^km/h		44.4 ^km/h (2009)
Wind Gust		36.9 ^km/h		64.9 ^km/h (2009)
Precipitation	21.34 ^mm			120.4 ^mm (2008)

Weather Element	Average
Visibility	13.4 ^km
Wind Direction	SSE (160 °)

Weather Element	Total
Heating Degree Days	21.6 (Base 18.3)

Total Years on Record: 21

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