Minnesota · Cass County
Crystal Lake Ice-Out Dates
The ice usually goes out of Crystal Lake around April 15 — the third week of April. Earliest ever: April 10 (2005). Latest: April 30 (2008).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
6 years on the books, 2002–2008. Newest first.
| Year | Ice-out date |
|---|---|
| 2008 | April 30 |
| 2007 | April 10 |
| 2005 | April 10 |
| 2004 | April 15 |
| 2003 | April 15 |
| 2002 | April 16 |
When Crystal freezes over
Crystal Lake usually freezes over around November 12 — the second week of November. Earliest on record: November 2 (2006–07). Latest: November 28 (2001–02).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2007–08 froze on November 21. Newest first.
| Winter | Ice-in date |
|---|---|
| 2007–08 | November 21 |
| 2006–07 | November 2 |
| 2004–05 | November 11 |
| 2003–04 | November 12 |
| 2002–03 | November 13 |
| 2001–02 | November 28 |
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.