The Wisconsin State Climatology Office keeps comprehensive records of the freeze and thaw dates for three Madison lakes: Mendota, Monona, and Wingra.
Madison Lake Ice Status (2024-2025 Season)
- Lake Mendota: Frozen as of January 7, 2025
- Lake Monona: Frozen as of January 5, 2024
- Lake Wingra: Open as of March 11, 2025
For more information, see how freeze and thaw dates are determined, and view some interesting ice statistics.