JOLIET, ILLINOIS

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Elevation: 177 meters Latitude: 41 31N Longitude: 088 10W

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DAILY WEATHER AVERAGE - 15 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-0.7 ^°C	3.1 ^°C	-4.6 ^°C	13.3 ^°C (2011)	-19 ^°C (2010)
Dewpoint	-3.7 ^°C	-0.1 ^°C	-7.4 ^°C	11 ^°C (2011)	-22 ^°C (2004)
Humidity	81.1 ^%	92.1 ^%	67.5 ^%		44 ^% (2004)
Barometer	1016.3 ^hPa	1022 ^hPa	1009.1 ^hPa	1037.6 ^hPa (2008)	1001.4 ^hPa (2012)
Wind Speed	13.2 ^km/h	24.8 ^km/h		35.2 ^km/h (2008)
Wind Gust		38.8 ^km/h		50.1 ^km/h (2011)
Precipitation	3.56 ^mm			10.41 ^mm (2012)

Weather Element	Average
Visibility	12.6 ^km
Wind Direction	S (179.2 °)

Weather Element	Total
Heating Degree Days	19.1 (Base 18.3)

Total Years on Record: 15

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