Minnesota · Chisago County
Pioneer Lake Ice-Out Dates
The ice usually goes out of Pioneer Lake around April 9 — the second week of April. Earliest ever: March 15 (2016). Latest: April 29 (2018).
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
10 years on the books, 2003–2023. Newest first.
| Year | Ice-out date |
|---|---|
| 2023 | April 15 |
| 2022 | April 11 |
| 2020 | March 30 |
| 2019 | April 9 |
| 2018 | April 29 |
| 2017 | March 20 |
| 2016 | March 15 |
| 2015 | March 25 |
| 2014 | April 22 |
| 2003 | April 10 |
When Pioneer freezes over
Pioneer Lake usually freezes over around November 27 — the fourth week of November. Earliest on record: November 10 (2018–19). Latest: December 19 (2015–16).
A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2023–24 froze on November 27. Newest first.
| Winter | Ice-in date |
|---|---|
| 2023–24 | November 27 |
| 2018–19 | November 10 |
| 2017–18 | December 8 |
| 2015–16 | December 19 |
| 2002–03 | November 14 |
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.