Minnesota · Itasca County
Rock Lake Ice-Out Dates
The ice usually goes out of Rock Lake around April 20 — the third week of April. Earliest ever: April 3 (2012). Latest: May 6 (2019).
April 20Usually around
April 3Earliest ever (2012)
May 6Latest ever (2019)
10Years of record (1994–2019)
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
10 years on the books, 1994–2019. Newest first.
| Year | Ice-out date |
|---|---|
| 2019 | May 6 |
| 2016 | April 20 |
| 2012 | April 3 |
| 2011 | April 29 |
| 2010 | April 5 |
| 2009 | May 1 |
| 2007 | April 26 |
| 2006 | April 14 |
| 2004 | April 23 |
| 1994 | April 18 |
Late ice is unpredictable — no date on this page says the ice is safe.
Records: Minnesota DNR ice-out records. Last checked August 2026.