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 - 23 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	0.7 ^°C	4.2 ^°C	-3.2 ^°C	18 ^°C (1996)	-13.9 ^°C (2000)
Dewpoint	-3.7 ^°C	-0.9 ^°C	-6.4 ^°C	15 ^°C (1996)	-17.2 ^°C (2001)
Humidity	73.7 ^%	86.7 ^%	57.9 ^%		40 ^% (2001)
Barometer	1021.3 ^hPa	1024.7 ^hPa	1016.9 ^hPa	1037.3 ^hPa (1998)	1002 ^hPa (2014)
Wind Speed	14.6 ^km/h	36.2 ^km/h		277.8 ^km/h (1996)
Wind Gust		43.6 ^km/h		64.9 ^km/h (1996)
Precipitation	17.53 ^mm			40.13 ^mm (2009)

Weather Element	Average
Visibility	14.8 ^km
Wind Direction	SSW (192.9 °)

Weather Element	Total
Heating Degree Days	17.9 (Base 18.3)

Total Years on Record: 20

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