Minnesota · Cass County
Mule Lake Ice-Out Dates
The ice usually goes out of Mule Lake around April 19 — the third week of April. Earliest ever: April 5 (2017). Latest: May 7 (2022).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
9 years on the books, 2002–2022. Newest first.
| Year | Ice-out date |
|---|---|
| 2022 | May 7 |
| 2018 | May 2 |
| 2017 | April 5 |
| 2008 | May 4 |
| 2007 | April 20 |
| 2005 | April 13 |
| 2004 | April 18 |
| 2003 | April 15 |
| 2002 | April 19 |
When Mule freezes over
Mule Lake usually freezes over around November 28 — the fourth week of November. Earliest on record: November 12 (2019–20). Latest: December 20 (2001–02).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2019–20 froze on November 12. Newest first.
| Winter | Ice-in date |
|---|---|
| 2019–20 | November 12 |
| 2007–08 | November 28 |
| 2006–07 | November 30 |
| 2004–05 | December 3 |
| 2003–04 | November 25 |
| 2002–03 | November 15 |
| 2001–02 | December 20 |
Records: Minnesota DNR ice-in records. Last checked August 2026.
Late ice is unpredictable — no date on this page says the ice is safe.
Records: Minnesota DNR ice-out records. Last checked August 2026.