"Figure 2. Duration of Ice Cover in the Great Lakes, 1973–2020",,,,,
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,,,,,
"Data source: NOAA, 2021",,,,,
Web update: April 2021,,,,,
Units: number of days with more than 5% ice cover,,,,,
,,,,,
Year,Erie,Huron,Michigan,Ontario,Superior
1973,67,108,85,67,97
1974,76,120,106,76,119
1975,65,105,97,32,95
1976,91,119,108,74,108
1977,117,136,124,118,133
1978,124,130,113,106,123
1979,96,120,117,71,137
1980,98,106,90,60,91
1981,108,113,104,67,110
1982,105,129,105,86,121
1983,47,85,64,34,86
1984,123,128,113,94,128
1985,101,116,94,85,107
1986,118,125,114,89,115
1987,56,82,72,19,48
1988,102,105,89,81,93
1989,77,124,107,43,120
1990,96,126,108,95,117
1991,64,102,81,56,93
1992,64,121,81,68,127
1993,83,121,89,62,99
1994,113,123,107,99,125
1995,80,93,61,39,79
1996,132,146,123,80,134
1997,85,128,113,75,122
1998,1,86,56,10,34
1999,80,103,80,49,54
2000,69,88,65,43,50
2001,123,130,111,80,105
2002,20,102,59,0,33
2003,105,119,102,81,103
2004,91,106,89,68,86
2005,103,123,104,70,86
2006,55,120,68,18,31
2007,70,88,69,51,67
2008,88,122,92,45,69
2009,106,132,106,65,109
2010,86,86,78,23,45
2011,113,124,102,54,84
2012,12,75,52,0,13
2013,56,105,84,25,75
2014,134,153,145,98,153
2015,104,126,109,90,126
2016,40,72,62,17,43
2017,42,101,80,4,51
2018,104,143,99,61,124
2019,87,120,93,73,97
2020,6,88,72,7,54