NAPERVILLE, ILLINOIS

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

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DAILY WEATHER AVERAGE - 21 JANUARY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-5.7 ^°C	-2.7 ^°C	-8.7 ^°C	8 ^°C (1997)	(2011)
Dewpoint	-7.9 ^°C	-6.8 ^°C	-10.4 ^°C	6.7 ^°C (1997)	-23.9 ^°C (2004)
Humidity	74.5 ^%	86.8 ^%	58.2 ^%		30 ^% (2004)
Barometer	1019.6 ^hPa	1024 ^hPa	1014.9 ^hPa	1039.3 ^hPa (2008)	1003 ^hPa (1997)
Wind Speed	17.2 ^km/h	28.2 ^km/h		42.6 ^km/h (2014)
Wind Gust		43.3 ^km/h		61.2 ^km/h (1997)
Precipitation	5.33 ^mm			31.5 ^mm (1999)

Weather Element	Average
Visibility	12.4 ^km
Wind Direction	SSW (198.5 °)

Weather Element	Total
Heating Degree Days	24.1 (Base 18.3)

Total Years on Record: 22

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