NAPERVILLE, ILLINOIS

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

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DAILY WEATHER AVERAGE - 25 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-3.7 ^°C	-0.2 ^°C	-7.3 ^°C	6.7 ^°C (2011)	(2008)
Dewpoint	-7.2 ^°C	-4.5 ^°C	-8.3 ^°C	4.4 ^°C (2009)	-16.7 ^°C (1998)
Humidity	76.8 ^%	87.9 ^%	61.3 ^%		35 ^% (1998)
Barometer	1019.6 ^hPa	1024 ^hPa	1015.2 ^hPa	1043.7 ^hPa (2000)	995.6 ^hPa (2009)
Wind Speed	17.1 ^km/h	31.7 ^km/h		129.7 ^km/h (2007)
Wind Gust		38.6 ^km/h		57.5 ^km/h (2009)
Precipitation	3.81 ^mm			19.05 ^mm (2009)

Weather Element	Average
Visibility	13.4 ^km
Wind Direction	WSW (244 °)

Weather Element	Total
Heating Degree Days	22.1 (Base 18.3)

Total Years on Record: 21

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