Minnesota · Itasca County
Zimmy Lake Ice-Out Dates
The ice usually goes out of Zimmy Lake around April 12 — the second week of April. Earliest ever: March 24 (2012). Latest: May 3 (2008).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
6 years on the books, 2004–2012. Newest first.
| Year | Ice-out date |
|---|---|
| 2012 | March 24 |
| 2011 | April 21 |
| 2010 | March 31 |
| 2008 | May 3 |
| 2006 | April 12 |
| 2004 | April 19 |
When Zimmy freezes over
Zimmy Lake usually freezes over around November 19 — the third week of November. Earliest on record: November 7 (2003–04). Latest: December 1 (2006–07).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2018–19 froze on November 13. Newest first.
| Winter | Ice-in date |
|---|---|
| 2018–19 | November 13 |
| 2017–18 | November 13 |
| 2011–12 | November 19 |
| 2010–11 | December 1 |
| 2008–09 | November 20 |
| 2007–08 | November 22 |
| 2006–07 | December 1 |
| 2005–06 | November 23 |
| 2003–04 | November 7 |
| 2002–03 | November 13 |
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.