ST. LOUIS - GATEWAY ARCH, MISSOURI

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Elevation: 450 feet Latitude: 38 37N Longitude: 090 11W

WEATHER

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DAILY WEATHER AVERAGE - JANUARY 21

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	31.1 ^°F	39.5 ^°F	22.2 ^°F	73.9 ^°F (1999)	3 ^°F (2011)
Dewpoint	22.3 ^°F	28.3 ^°F	18.1 ^°F	57.9 ^°F (1999)	-4 ^°F (2008)
Humidity	72 ^%	87.5 ^%	55.9 ^%		29 ^% (2008)
Barometer	30.13 ⁱⁿ	30.25 ⁱⁿ	29.99 ⁱⁿ	30.64 ⁱⁿ (2008)	29.44 ⁱⁿ (1999)
Wind Speed	9 ^mph	16.4 ^mph		35.7 ^mph (2014)
Wind Gust		24.6 ^mph		49.5 ^mph (2014)
Precipitation	0.31 ⁱⁿ			0.90 ⁱⁿ (2010)

Weather Element	Average
Visibility	8.2 ^mi
Wind Direction	SSE (161.9 °)

Weather Element	Total
Heating Degree Days	34.2 (Base 18.3)
Growing Degree Days	7.5 (Base 10)

Total Years on Record: 22

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