Minnesota · St. Louis County
St. Mary's Lake Ice-Out Dates
The ice usually goes out of St. Mary's Lake around April 23 — the fourth week of April. Earliest ever: April 9 (2017). Latest: May 5 (2023).
April 23Usually around
April 9Earliest ever (2017)
May 5Latest ever (2023)
9Years of record (2004–2023)
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
9 years on the books, 2004–2023. Newest first.
| Year | Ice-out date |
|---|---|
| 2023 | May 5 |
| 2020 | April 26 |
| 2018 | May 3 |
| 2017 | April 9 |
| 2015 | April 15 |
| 2008 | May 4 |
| 2007 | April 22 |
| 2005 | April 15 |
| 2004 | April 23 |
Late ice is unpredictable — no date on this page says the ice is safe.
Records: Minnesota DNR ice-out records. Last checked August 2026.