Lake Sullivan Ice Out History

Lake Sullivan’s ice out date for 2020 was April 9th. The definition of lake ice-out varies from lake to lake, and individual to individual. For some, ice out occurs only when the lake is completely free of ice. For others, ice out is defined as the moment when navigation is possible from point A to point B. And yet for others, ice out is when 90 percent of the lake is ice free.

Lake Sullivan:
Median ice out date: April 19
Earliest ice out date: March 19, 2012
Latest ice out date: April 29, 1996
Period of record: 1989 to 2014

Click here to view the Ice Out dates for Minnesota Lakes.