NAPERVILLE, ILLINOIS

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Elevation: 209 meters Latitude: 41 49N Longitude: 088 04W

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DAILY WEATHER AVERAGE - 8 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-1.4 ^°C	1.5 ^°C	-5.4 ^°C	8.9 ^°C (1999)	-15.6 ^°C (2006)
Dewpoint	-5 ^°C	-1.8 ^°C	-8 ^°C	5.6 ^°C (2015)	-17.2 ^°C (2002)
Humidity	77.5 ^%	90.8 ^%	62 ^%		41 ^% (2002)
Barometer	1020.3 ^hPa	1025.7 ^hPa	1014.6 ^hPa	1038.6 ^hPa (2005)	988.1 ^hPa (2009)
Wind Speed	14.8 ^km/h	24.5 ^km/h		42.6 ^km/h (1995)
Wind Gust		42 ^km/h		57.5 ^km/h (1995)
Precipitation	7.37 ^mm			20.57 ^mm (2009)

Weather Element	Average
Visibility	12.7 ^km
Wind Direction	SSW (199 °)

Weather Element	Total
Heating Degree Days	20.3 (Base 18.3)

Total Years on Record: 21

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