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 - 30 JUNE

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	25.4 ^°C	30.7 ^°C	19.5 ^°C	39.4 ^°C (2012)	14.4 ^°C (2010)
Dewpoint	18.4 ^°C	20.5 ^°C	16.1 ^°C	24.4 ^°C (2014)	7.8 ^°C (2012)
Humidity	68.2 ^%	91.2 ^%	46.8 ^%		23 ^% (2012)
Barometer	1015.2 ^hPa	1016.9 ^hPa	1013.5 ^hPa	1024 ^hPa (2010)	1004.4 ^hPa (2009)
Wind Speed	9.5 ^km/h	20.6 ^km/h		31.5 ^km/h (2009)
Wind Gust		35.4 ^km/h		44.4 ^km/h (1998)
Precipitation	1.02 ^mm			2.29 ^mm (2000)

Weather Element	Average
Visibility	14.3 ^km
Wind Direction	SSE (145.6 °)

Weather Element	Total
Cooling Degree Days	6.8 (Base 18.3)
Growing Degree Days	15.1 (Base 10)

Total Years on Record: 20

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