Minnesota · St. Louis County
Judson Mine Pit Lake Ice-Out Dates
The ice usually goes out of Judson Mine Pit Lake around April 26 — the fourth week of April. Earliest ever: April 4 (2000). Latest: May 11 (1996).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
18 years on the books, 1990–2008. Newest first.
| Year | Ice-out date |
|---|---|
| 2008 | May 8 |
| 2007 | April 26 |
| 2006 | April 14 |
| 2005 | April 16 |
| 2003 | April 27 |
| 2002 | April 26 |
| 2001 | April 29 |
| 2000 | April 4 |
| 1999 | April 25 |
| 1998 | April 13 |
| 1997 | April 29 |
| 1996 | May 11 |
| 1995 | May 3 |
| 1994 | April 19 |
| 1993 | April 27 |
| 1992 | May 3 |
| 1991 | April 25 |
| 1990 | April 27 |
When Judson Mine Pit freezes over
Judson Mine Pit Lake usually freezes over around December 10 — the second week of December. Earliest on record: November 26 (1996–97). Latest: December 28 (1997–98).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2008–09 froze on December 11. Newest first.
| Winter | Ice-in date |
|---|---|
| 2008–09 | December 11 |
| 2007–08 | December 7 |
| 2006–07 | December 24 |
| 2005–06 | December 10 |
| 2002–03 | December 3 |
| 2001–02 | December 28 |
| 2000–01 | December 11 |
| 1999–00 | December 22 |
| 1998–99 | December 26 |
| 1997–98 | December 28 |
| 1996–97 | November 26 |
| 1995–96 | November 29 |
| 1994–95 | December 22 |
| 1993–94 | December 3 |
| 1992–93 | December 8 |
| 1991–92 | November 30 |
| 1990–91 | December 18 |
| 1989–90 | December 4 |
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.