ST. LOUIS - MEMORIAL PLAZA, MISSOURI

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Elevation: 190 meters Latitude: 38 38N Longitude: 090 12W

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DAILY WEATHER AVERAGE - 19 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	1 ^°C	5.2 ^°C	-3 ^°C	16.1 ^°C (1997)	-15 ^°C (2000)
Dewpoint	-3.1 ^°C	0.2 ^°C	-4.6 ^°C	12.2 ^°C (2002)	-13.3 ^°C (2004)
Humidity	75.1 ^%	89.3 ^%	59.2 ^%		38 ^% (2004)
Barometer	1020 ^hPa	1023.7 ^hPa	1015.6 ^hPa	1039.6 ^hPa (2005)	1000.7 ^hPa (2012)
Wind Speed	14 ^km/h	24.6 ^km/h		42.6 ^km/h (2008)
Wind Gust		42.8 ^km/h		57.5 ^km/h (2008)
Precipitation	9.65 ^mm			22.61 ^mm (2011)

Weather Element	Average
Visibility	13.4 ^km
Wind Direction	SSW (192.7 °)

Weather Element	Total
Heating Degree Days	17.3 (Base 18.3)

Total Years on Record: 20

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