Minnesota · Cass County
Sylvan Lake Ice-Out Dates
The ice usually goes out of Sylvan Lake around April 21 — the third week of April. Earliest ever: March 25 (2012). Latest: May 11 (2013).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
6 years on the books, 1979–2013. Newest first.
| Year | Ice-out date |
|---|---|
| 2013 | May 11 |
| 2012 | March 25 |
| 2010 | March 29 |
| 2009 | April 23 |
| 2007 | April 21 |
| 1979 | May 3 |
When Sylvan freezes over
Sylvan Lake usually freezes over around November 20 — the third week of November. Earliest on record: November 18 (2008–09). Latest: December 15 (2006–07).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2012–13 froze on November 23. Newest first.
| Winter | Ice-in date |
|---|---|
| 2012–13 | November 23 |
| 2011–12 | November 18 |
| 2010–11 | November 20 |
| 2008–09 | November 18 |
| 2006–07 | December 15 |
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.