Minnesota · Polk County
Union Lake Ice-Out Dates
The ice usually goes out of Union Lake around April 24 — the fourth week of April. Earliest ever: April 6 (2017). Latest: May 8 (1996).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
10 years on the books, 1996–2023. Newest first.
| Year | Ice-out date |
|---|---|
| 2023 | May 4 |
| 2020 | April 29 |
| 2017 | April 6 |
| 2015 | April 13 |
| 2008 | April 30 |
| 2007 | April 24 |
| 2006 | April 13 |
| 2004 | April 18 |
| 2003 | May 4 |
| 1996 | May 8 |
When Union freezes over
Union Lake usually freezes over around November 30 — the fourth week of November. Earliest on record: November 21 (2006–07). Latest: December 19 (2015–16).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2024–25 froze on November 30. Newest first.
| Winter | Ice-in date |
|---|---|
| 2024–25 | November 30 |
| 2023–24 | December 5 |
| 2017–18 | December 7 |
| 2015–16 | December 19 |
| 2007–08 | November 24 |
| 2006–07 | November 21 |
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.