Minnesota · Crow Wing County
Bertha Lake Ice-Out Dates
The ice usually goes out of Bertha Lake around April 15 — the third week of April. Earliest ever: March 17 (2024). Latest: May 6 (2022).
April 15Usually around
March 17Earliest ever (2024)
May 6Latest ever (2022)
10Years of record (2016–2025)
The 2027 season
Tracking resumes when the ice forms.
Every recorded ice-out
10 years on the books, 2016–2025. Newest first.
| Year | Ice-out date |
|---|---|
| 2025 | April 15 |
| 2024 | March 17 |
| 2023 | May 1 |
| 2022 | May 6 |
| 2021 | April 5 |
| 2020 | April 20 |
| 2019 | April 24 |
| 2018 | May 3 |
| 2017 | April 5 |
| 2016 | April 1 |
Late ice is unpredictable — no date on this page says the ice is safe.
Records: Minnesota DNR ice-out records. Last checked August 2026.