When Does Clearwater Lake Freeze? Typical Ice-In Dec 2, Ice-Out Apr 22
Clearwater Lake in Clearwater County, Minnesota usually freezes over around Dec 2, and usually has ice-out around Apr 22, based on Minnesota DNR ice observations recorded between 2001-2024. That works out to roughly 224 days of open water a year. These are typical dates across many winters, not a forecast — individual years swing by weeks in either direction.
Ice record for Clearwater Lake
| Typical freeze-up (ice-in) | Dec 2 |
| Typical ice-out | Apr 22 |
| Earliest freeze-up on record | Nov 13, 2019 |
| Latest freeze-up on record | Dec 11, 2001 |
| Earliest ice-out on record | Apr 12, 2024 |
| Latest ice-out on record | May 7, 2022 |
| Open-water season | ~224 days |
| Winters observed | 18 |
| Location | Clearwater County, Minnesota |
These are dates, not an ice-safety reading
A typical freeze-up date tells you when Clearwater Lake has usually iced over — it does not tell you the ice is safe, and we hold no thickness measurement for this or any lake. The Minnesota DNR is explicit that no ice is ever completely safe: thickness varies across a single lake, and current, springs, aerators, and insulating snow all weaken it. Ice that held a truck last week may not hold a person today.
Read the ice-thickness guidelines before going out, and check current conditions with the Minnesota DNR ice-safety page and local bait shops, which track conditions lake by lake.
How much the timing varies
Ice-out on Clearwater Lake has landed as early as Apr 12, 2024 and as late as May 7, 2022 — a spread of weeks around the Apr 22 median. Freeze-up has ranged from Nov 13, 2019 to Dec 11, 2001. That year-to-year swing is why a median date is a planning tool, not a schedule. Freeze-up is driven by accumulated cold after the lake turns over in fall; ice-out by late-winter air temperature, sun angle, and how much snow sits on top of the ice reflecting it. Clearwater Lake carries an overall water-quality grade of A — the full breakdown is on the lake report.
Source: Minnesota DNR Climate Office ice-in / ice-out records, observations from 2001-2024.