CHESTERFIELD, MISSOURI

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Elevation: 559 feet Latitude: 38 41N Longitude: 090 31W

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DAILY WEATHER AVERAGE - JULY 20

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	81.1 ^°F	89.6 ^°F	72.7 ^°F	99 ^°F (2011)	61 ^°F (2009)
Dewpoint	69.1 ^°F	72.8 ^°F	65.8 ^°F	78.8 ^°F (2006)	53.1 ^°F (2011)
Humidity	68.7 ^%	86.3 ^%	51.5 ^%		39 ^% (2011)
Barometer	29.96 ⁱⁿ	30.02 ⁱⁿ	29.89 ⁱⁿ	30.15 ⁱⁿ (2007)	29.76 ⁱⁿ (2003)
Wind Speed	7.7 ^mph	14.1 ^mph		28.8 ^mph (2010)
Wind Gust		22.8 ^mph		39.1 ^mph (2010)
Precipitation	1.92 ⁱⁿ			6.71 ⁱⁿ (2010)

Weather Element	Average
Visibility	8.6 ^mi
Wind Direction	SSE (165.7 °)

Weather Element	Total
Cooling Degree Days	16.2 (Base 18.3)
Growing Degree Days	31.2 (Base 10)

Total Years on Record: 20

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