ST. LOUIS - GATEWAY ARCH, MISSOURI

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Elevation: 137 meters Latitude: 38 37N Longitude: 090 11W

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DAILY WEATHER AVERAGE - 21 JULY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	27 ^°C	32.5 ^°C	22.2 ^°C	38.9 ^°C (1998)	13.9 ^°C (2007)
Dewpoint	20.9 ^°C	22.7 ^°C	19.1 ^°C	28 ^°C (2001)	11.7 ^°C (2012)
Humidity	71.5 ^%	90.1 ^%	48.4 ^%		30 ^% (2012)
Barometer	1014.6 ^hPa	1016.3 ^hPa	1012.9 ^hPa	1023.7 ^hPa (2007)	1006.1 ^hPa (2003)
Wind Speed	7.9 ^km/h	18.3 ^km/h		29.6 ^km/h (2008)
Wind Gust		43.9 ^km/h		50.1 ^km/h (2010)
Precipitation	8.64 ^mm			32.26 ^mm (2010)

Weather Element	Average
Visibility	13.5 ^km
Wind Direction	SE (133.3 °)

Weather Element	Total
Cooling Degree Days	9.1 (Base 18.3)
Growing Degree Days	17.4 (Base 10)

Total Years on Record: 21

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