GRINNELL, IOWA

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Elevation: 305 meters Latitude: 41 43N Longitude: 092 43W

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DAILY WEATHER AVERAGE - 18 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-2.3 ^°C	2.2 ^°C	-6.6 ^°C	11 ^°C (2011)	-14 ^°C (2008)
Dewpoint	-5.6 ^°C	-2.8 ^°C	-8.4 ^°C	2 ^°C (2011)	-16 ^°C (2013)
Humidity	79.4 ^%	93.6 ^%	61.7 ^%		46 ^% (2011)
Barometer	1016.3 ^hPa	1021.3 ^hPa	1011.9 ^hPa	1032.2 ^hPa (2006)	998.3 ^hPa (2012)
Wind Speed	15.9 ^km/h	30.9 ^km/h		48.1 ^km/h (2015)
Wind Gust		40.7 ^km/h		61.2 ^km/h (2015)
Precipitation	9.65 ^mm			9.65 ^mm (2008)

Weather Element	Average
Visibility	14.3 ^km
Wind Direction	SW (227.7 °)

Weather Element	Total
Heating Degree Days	20.5 (Base 18.3)

Total Years on Record: 9

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