Late First-Frost in Twin Cities

At 10:00 PM on October 28, the temperature at the Twin Cities International Airport dropped to 32 degrees F. This was the first temperature at, or below, freezing reported this autumn. A first-frost date of October 28 ties 2010 as the tenth latest autumn first-frost in a record that extends back to 1891. The late first-frost date was influenced by the urban heat island. All areas surrounding the Twin Cities metropolitan area reported their first frost earlier in the month.

Latest first-frost dates

   1   11/7/1900
   2   11/6/1958
   3   11/5/1894
        11/5/1940
   5   11/2/1924
   6   11/1/1921
        11/1/1931
   8   10/30/1973
   9   10/29/1963
 10   10/28/2010
         10/28/2007
         10/28/1953
         10/28/1928
         10/28/1910

average October 6