History of Ice Freezing and Thawing on Lake Wingra

View the ice-over and ice-out dates, and duration of ice cover, for Lake Wingra dating back to 1877.

Note: The data for Lake Wingra is incomplete, especially from the late 1800s through the mid 1960s.

Annual Duration of Ice Cover

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Longest Duration

164 days
(1880-81)

Shortest Duration

63 days
(2023-24)

Average Duration

113 days

Five-Year Running Average

93 days

Freeze and Thaw Dates