RALPH, SOUTH DAKOTA

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Elevation: 855 meters Latitude: 45 48N Longitude: 103 06W

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DAILY WEATHER AVERAGE - 15 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-6.5 ^°C	-0.9 ^°C	-12.6 ^°C	10 ^°C (2002)	-31.7 ^°C (2009)
Dewpoint	-10.1 ^°C	-5.8 ^°C	-14.6 ^°C	3.9 ^°C (2002)	-35 ^°C (1997)
Humidity	77.1 ^%	90.3 ^%	61.2 ^%		30 ^% (1997)
Barometer	1016.3 ^hPa	1022 ^hPa	1009.8 ^hPa	1040.6 ^hPa (2008)	995.9 ^hPa (2003)
Wind Speed	17.7 ^km/h	32.5 ^km/h		72.3 ^km/h (2000)
Wind Gust		51.2 ^km/h		85.1 ^km/h (2000)
Precipitation	1.02 ^mm			2.03 ^mm (2004)

Weather Element	Average
Visibility	13.8 ^km
Wind Direction	SW (219.5 °)

Weather Element	Total
Heating Degree Days	25.1 (Base 18.3)

Total Years on Record: 20

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