The dates when soils initially freeze across the region, taken from Army Corps of Engineers frost tube records for the period 1971-1988. _________________________________________________________ Location Ave Date Earliest Date Latest Date _________________________________________________________ Minot, ND 11/27 10/30 1/4 Bottineau, ND 11/17 10/29 12/8 Park River, ND 11/20 11/7 12/8 Devils Lake, ND 11/26 11/13 12/12 Langdon, ND 11/17 10/27 1/4 Valley City, ND 11/20 11/1 12/7 Fargo, ND 11/25 11/7 12/16 Spooner, WI 12/4 11/26 12/22 Gay Mills, WI 12/6 11/9 12/24 Neillsville, WI 12/14 11/19 1/2 Glen Flora, WI 12/7 11/10 1/9 Mauston, WI 12/8 11/15 1/4 Wausau, WI 12/17 12/8 1/22 Bessmmer, MI 12/17 11/13 3/7 Crookston, MN 11/28 11/10 12/26 Watson, MN 12/1 11/6 12/15 Morris, MN 11/24 11/7 1/7 Wheaton, MN 11/24 11/10 12/3 Fergus Falls, MN 11/26 11/9 12/30 Roseau, MN 12/6 10/28 12/30 Bemidji, MN 11/24 11/6 12/8 Brainerd, MN 12/1 11/18 12/14 Lamberton, MN 12/4 11/10 12/30 Winnebago, MN 12/2 11/11 12/25 Mankato, MN 12/21 12/7 1/12 Minneapolis, MN 12/8 11/13 1/8 St Cloud, MN 11/27 11/11 12/11 McGregor, MN 11/29 11/13 12/11 Northome, MN 12/12 11/24 1/7 Int'l Falls, MN 12/8 11/23 12/26 Virginia, MN 11/17 10/29 1/9 Duluth, MN 12/2 10/31 1/18 St Paul, MN 12/6 11/7 1/2 Rochester, MN 12/6 11/9 1/10 Winona, MN 12/20 11/18 1/10 Mark Seeley Professor and Extension Climatologist Department of Soil, Water, and Climate University of Minnesota St Paul, MN 55108
