National Weather Service United States Department of Commerce

Record high temperatures broken or tied in several locations for November 21. The observed highs in the upper 60s to lower 70s are 25 to 30 degrees above normal for this time of year. Many of the record highs for this date were previously set in 1960.

Following are the observed high temperatures at those locations which tied or broke the record high for November 21st, along with the previous records and normal highs for those locations. (Please note that it is possible additional records were tied or broken. However, many of our cooperative observers report in the morning, so their official high temperatures for today are not yet known as of this writing.)

Record Highs for November 21, 2012
Southeast South Dakota
Location Observed High Previous Record Normal High
Huron 68 (tied) 68 in 1960 39
Sioux Falls 70 68 in 1908 & 1960 39
Vermillion 72 71 in 1960 44
Northwest Iowa
Location Observed High Previous Record Normal High
Sioux Center 70 68 in 1962 42
Sioux City 72 70 in 1960 43


A couple of other interesting tidbits regarding this record warm day in Sioux Falls:

  • November 21, 2012 is the latest 70 degree reading in a calendar year (previously was November 20, 1962)
  • 2012 now has the longest stretch between first & last 70+ degree readings in a calendar year...numbering 255 days between March 10th & November 21st. Previously, the longest period between first & last 70+ degree days was 252 days, back in 1981 (February 17th to October 28th).