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 - DECEMBER 25

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	29.7 ^°F	37.2 ^°F	22.1 ^°F	52 ^°F (2014)	1.9 ^°F (2000)
Dewpoint	21.1 ^°F	26.3 ^°F	16.9 ^°F	48.2 ^°F (2009)	3 ^°F (1998)
Humidity	71.7 ^%	85 ^%	55.7 ^%		34 ^% (1998)
Barometer	30.18 ⁱⁿ	30.29 ⁱⁿ	30.05 ⁱⁿ	30.84 ⁱⁿ (2000)	29.24 ⁱⁿ (2009)
Wind Speed	8.5 ^mph	14.5 ^mph		20.7 ^mph (2006)
Wind Gust		25.3 ^mph		35.7 ^mph (2009)
Precipitation	0.12 ⁱⁿ			0.31 ⁱⁿ (2009)

Weather Element	Average
Visibility	9.3 ^mi
Wind Direction	SSW (187.3 °)

Weather Element	Total
Heating Degree Days	35.4 (Base 18.3)

Total Years on Record: 20

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