FORT SULLY, SOUTH DAKOTA

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Elevation: 503 meters Latitude: 44 38N Longitude: 100 27W

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DAILY WEATHER AVERAGE - 21 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-9.6 ^°C	-3.9 ^°C	-13.4 ^°C	5.1 ^°C (1997)	-23.3 ^°C (2013)
Dewpoint	-12.1 ^°C	-7.6 ^°C	-15.6 ^°C	-1.4 ^°C (1997)	-27 ^°C (1998)
Humidity	82.8 ^%	92.5 ^%	69 ^%		49 ^% (1998)
Barometer	1016.3 ^hPa	1021.7 ^hPa	1010.5 ^hPa	1038.3 ^hPa (1998)	997.6 ^hPa (2014)
Wind Speed	15 ^km/h	25.9 ^km/h		44.4 ^km/h (1998)
Wind Gust		44.4 ^km/h		55.5 ^km/h (1998)
Precipitation	---			--- ()

Weather Element	Average
Visibility	14.2 ^km
Wind Direction	SSE (160.4 °)

Weather Element	Total
Heating Degree Days	27 (Base 18.3)

Total Years on Record: 8

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