OLNEY, ILLINOIS

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Elevation: 147 meters Latitude: 38 42N Longitude: 088 04W

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DAILY WEATHER AVERAGE - 19 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	1.6 ^°C	5.7 ^°C	-2.3 ^°C	14 ^°C (2008)	-11 ^°C (2005)
Dewpoint	-2.7 ^°C	1 ^°C	-5.3 ^°C	13 ^°C (2002)	-15 ^°C (2008)
Humidity	75.7 ^%	88.1 ^%	61.3 ^%		28 ^% (2008)
Barometer	1019.6 ^hPa	1023.4 ^hPa	1015.2 ^hPa	1036.6 ^hPa (2005)	1002.4 ^hPa (2002)
Wind Speed	12.4 ^km/h	25.1 ^km/h		40.7 ^km/h (2001)
Wind Gust		45.7 ^km/h		62.9 ^km/h (2008)
Precipitation	13.46 ^mm			32 ^mm (2002)

Weather Element	Average
Visibility	13.2 ^km
Wind Direction	SSW (203 °)

Weather Element	Total
Heating Degree Days	16.6 (Base 18.3)

Total Years on Record: 15

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