ST. LOUIS - GATEWAY ARCH, MISSOURI

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

WEATHER

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DAILY WEATHER AVERAGE - 11 FEBRUARY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	0.8 ^°C	5.2 ^°C	-4.2 ^°C	20.6 ^°C (1999)	-18.3 ^°C (2014)
Dewpoint	-5.6 ^°C	-2.2 ^°C	-8.3 ^°C	16.1 ^°C (1999)	-22.2 ^°C (2002)
Humidity	64.7 ^%	82.9 ^%	47.9 ^%		32 ^% (2002)
Barometer	1021 ^hPa	1025.7 ^hPa	1016.6 ^hPa	1035.9 ^hPa (2001)	992.9 ^hPa (2009)
Wind Speed	15.8 ^km/h	27 ^km/h		50.1 ^km/h (2009)
Wind Gust		51.3 ^km/h		70.3 ^km/h (1996)
Precipitation	51.05 ^mm			127.51 ^mm (2009)

Weather Element	Average
Visibility	15.8 ^km
Wind Direction	S (179 °)

Weather Element	Total
Heating Degree Days	17.8 (Base 18.3)
Growing Degree Days	0.6 (Base 10)

Total Years on Record: 22

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