Minnesota · Dakota County
Thomas Lake Ice-Out Dates
The ice usually goes out of Thomas Lake around April 4 — the first week of April. Earliest ever: March 25 (2007). Latest: April 16 (2008).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
7 years on the books, 2003–2022. Newest first.
| Year | Ice-out date |
|---|---|
| 2022 | April 7 |
| 2008 | April 16 |
| 2007 | March 25 |
| 2006 | April 4 |
| 2005 | April 7 |
| 2004 | April 2 |
| 2003 | April 1 |
When Thomas freezes over
Thomas Lake usually freezes over around November 26 — the fourth week of November. Earliest on record: November 14 (2005–06). Latest: November 30 (2006–07).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2023–24 froze on November 25. Newest first.
| Winter | Ice-in date |
|---|---|
| 2023–24 | November 25 |
| 2021–22 | November 30 |
| 2007–08 | November 28 |
| 2006–07 | November 30 |
| 2005–06 | November 14 |
| 2004–05 | November 26 |
| 2003–04 | 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.