Minnesota · Pine County
Grindstone Lake Ice-Out Dates
The ice usually goes out of Grindstone Lake around April 14 — the second week of April. Earliest ever: March 19 (2024). Latest: May 5 (2014).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
22 years on the books, 1976–2026. Newest first.
| Year | Ice-out date |
|---|---|
| 2026 | April 15 |
| 2025 | April 7 |
| 2024 | March 19 |
| 2023 | April 27 |
| 2022 | May 2 |
| 2021 | April 5 |
| 2020 | April 9 |
| 2019 | April 22 |
| 2018 | May 4 |
| 2017 | April 5 |
| 2015 | April 12 |
| 2014 | May 5 |
| 2009 | April 3 |
| 2008 | April 25 |
| 2007 | April 19 |
| 2006 | April 9 |
| 2004 | April 14 |
| 2003 | April 15 |
| 1993 | April 19 |
| 1991 | April 19 |
| 1981 | April 10 |
| 1976 | April 8 |
When Grindstone freezes over
Grindstone Lake usually freezes over around December 11 — the second week of December. Earliest on record: November 26 (1976–77). Latest: January 12 (2023–24).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2025–26 froze on December 19. Newest first.
| Winter | Ice-in date |
|---|---|
| 2025–26 | December 19 |
| 2023–24 | January 12 |
| 2022–23 | December 12 |
| 2021–22 | December 23 |
| 2019–20 | December 3 |
| 2018–19 | December 7 |
| 2007–08 | December 11 |
| 2006–07 | December 27 |
| 2005–06 | December 16 |
| 2003–04 | December 12 |
| 1996–97 | November 28 |
| 1995–96 | November 29 |
| 1994–95 | December 14 |
| 1991–92 | November 29 |
| 1981–82 | December 18 |
| 1980–81 | December 11 |
| 1979–80 | December 12 |
| 1978–79 | December 2 |
| 1977–78 | December 8 |
| 1976–77 | November 26 |
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.