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 - 12 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	2.3 ^°C	5.8 ^°C	-1.5 ^°C	22.2 ^°C (2015)	-13.9 ^°C (2013)
Dewpoint	-1.2 ^°C	1.1 ^°C	-4.2 ^°C	16.7 ^°C (2015)	-17.2 ^°C (2012)
Humidity	79 ^%	90.4 ^%	63.6 ^%		38 ^% (2012)
Barometer	1021.7 ^hPa	1025.4 ^hPa	1018.3 ^hPa	1038.3 ^hPa (2013)	1003.4 ^hPa (2010)
Wind Speed	10.8 ^km/h	20.8 ^km/h		48.1 ^km/h (2010)
Wind Gust		46 ^km/h		61.2 ^km/h (2010)
Precipitation	17.02 ^mm			37.08 ^mm (2001)

Weather Element	Average
Visibility	12.4 ^km
Wind Direction	SSE (153.5 °)

Weather Element	Total
Heating Degree Days	16.2 (Base 18.3)
Growing Degree Days	3.5 (Base 10)

Total Years on Record: 21

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