Quote:
Originally Posted by Jammie
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Jammie is correct....-42 (actual temp) is the coldest back in 1899....Here is a top 5. This data is avbl on the NWS Sioux Falls web site under local climate data under the tab NOWdata (NOAA Online Weather Data).
SIOUX FALLS FOSS FLD (397667)
Extremes
Lowest Daily Minimum Temperature (degrees F)
Days: 1/1 - 12/31
Length of period: 1 day
Years: 1893-2007
Rank Value Ending Date
1 -42.0 2/9/1899
2 -40.0 2/11/1899
3 -38.0 1/12/1912, 2/8/1899
5 -37.0 2/2/1905
6 -36.0 1/19/1970, 2/2/1917
8 -35.0 2/3/1917, 2/10/1893
10 -33.0 1/13/1916
Here are the warmest days ever....
SIOUX FALLS FOSS FLD (397667)
Extremes
Highest Daily Maximum Temperature (degrees F)
Days: 1/1 - 12/31
Length of period: 1 day
Years: 1893-2007
Rank Value Ending Date
1 110.0 6/21/1988, 7/17/1936
3 109.0 8/24/1936, 7/5/1936
5 108.0 7/9/1989, 8/26/1973, 7/29/1947, 7/4/1936, 7/25/1894
10 107.0 7/12/1995
Now...as for wind chills official records of these are not kept. They are more used in the short term during the event or day itself for issuance of warnings, etc but not normally kept as part of the recorded climatological database.
Interestingly...you may not be aware but the wind chill formula changed in 2001....Meteorological Services of Canada and the NWS along with other partners got together and came up with a revised formula for calculating the wind chill. It was felt the old one (used up through 2000) was over exaggerating the affect of cold on a human body and thus too cold values were given. The new formula values for wind and temp give warmer readings than the previous formula. For this reason....having a database of record wind chills is tough. For -30F and 30 mph wind the old formula used prior to 2001 would give a wind chill of -93F while currently the same conditions would be reported as a wind chill of -65.
To compare the old and new wind chills
GOLDEN GATE WEATHER SERVICES- Wind Chill, New and Old
Another good link
NWS Wind Chill Questions and Answers
Wind chill info from NWS FSD
NWS Sioux Falls, SD Wind Chill
And finally a link to climate and past weather for many SD cities from the SD Climatology Office at SDSU in Brookings
Climate: South Dakota Climate and Weather