University of Wisconsin–Madison

Tag: Lake Mendota freeze

Where Does Lake Mendota’s 2025 Freeze Date Rank in the 170-Year Record?

It’s official! Just as we were waking up from ringing in the New Year, the Wisconsin State Climatology Office declared January 1, 2026 as the date that Lake Mendota officially froze for the 2025/26 winter season. Here at the CFL it’s hard to feel like winter has truly begun until the last of Madison’s lakes …

Why Do We Say Lake Mendota is Frozen Before it’s Fully Frozen?

This weekend, the Center for Limnology Twitter account was tagged in a post from the UW Department of Emergency Medicine’s chief flight physician and pilot, Mike Abernethy, who had been flying a helicopter over Lake Mendota on Saturday, January 9th. It’s a really cool view of the lake and you should watch it here. While …

Updated: When Will Our Lakes Freeze? Time for Annual CFL “Ice On” Pool

Note, post was originally published 11/28/16 and has been updated to include current conditions.  After a rather balmy Thanksgiving, where nighttime lows still hovered above freezing, our forecast calls for highs in the 30s (Fahrenheit) and lows in the 20s this week, which means it’s the time of year when we try to do the impossible …