Are Madison’s Lakes Frozen? (2023-2024 Edition)

The Wisconsin State Climatology Office keeps comprehensive records of the freeze and thaw dates for three Madison lakes: Mendota, Monona, and Wingra.

With the recent warm temperatures in Madison, all three lakes are open.

Madison Lake Ice Status (2023-2024 Season)

The lakes had previously frozen on January 15. For lakes Mendota and Monona, that was the third or fourth latest freeze-up since records began in the early 1850s. The five shortest ice-duration seasons have all occurred since the 1980s.

For more information, see how freeze and thaw dates are determined, and view some interesting ice statistics.