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	31.7 ^°F	39.7 ^°F	22.8 ^°F	73.9 ^°F (1999)	3 ^°F (2011)
Dewpoint	22.8 ^°F	28.5 ^°F	18.9 ^°F	57.9 ^°F (1999)	-4 ^°F (2008)
Humidity	71.8 ^%	87.3 ^%	55.8 ^%		29 ^% (2008)
Barometer	30.12 ⁱⁿ	30.23 ⁱⁿ	29.98 ⁱⁿ	30.64 ⁱⁿ (2008)	29.44 ⁱⁿ (1999)
Wind Speed	8.6 ^mph	15.3 ^mph		23 ^mph (2006)
Wind Gust		22.1 ^mph		28.8 ^mph (2013)
Precipitation	0.37 ⁱⁿ			0.90 ⁱⁿ (2010)

Weather Element	Average
Visibility	8.1 ^mi
Wind Direction	SSE (156 °)

Weather Element	Total
Heating Degree Days	33.8 (Base 18.3)
Growing Degree Days	7.5 (Base 10)

Total Years on Record: 19

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