GRAND TOWER, ILLINOIS

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Elevation: 113 meters Latitude: 37 40N Longitude: 089 31W

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DAILY WEATHER AVERAGE - 21 AUGUST

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	23.7 ^°C	30.4 ^°C	18.7 ^°C	35 ^°C (2003)	11 ^°C (1999)
Dewpoint	19.2 ^°C	21.4 ^°C	16.7 ^°C	26.1 ^°C (2003)	4 ^°C (2012)
Humidity	78.3 ^%	95.2 ^%	52.3 ^%		31 ^% (2012)
Barometer	1017.3 ^hPa	1019 ^hPa	1015.6 ^hPa	1025.1 ^hPa (1998)	1007.8 ^hPa (2010)
Wind Speed	7.6 ^km/h	17.7 ^km/h		42.6 ^km/h (2010)
Wind Gust		35.7 ^km/h		51.8 ^km/h (2010)
Precipitation	22.35 ^mm			100.08 ^mm (2010)

Weather Element	Average
Visibility	11.6 ^km
Wind Direction	SE (134.4 °)

Weather Element	Total
Cooling Degree Days	6.2 (Base 18.3)
Growing Degree Days	14.6 (Base 10)

Total Years on Record: 19

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