When Does Island Lake Freeze? Typical Ice-In Nov 27, Ice-Out Apr 18
Island Lake in Crow Wing County, Minnesota usually freezes over around Nov 27, and usually has ice-out around Apr 18, based on Minnesota DNR ice observations recorded between 2006-2024. That works out to roughly 223 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 Island Lake
| Typical freeze-up (ice-in) | Nov 27 |
| Typical ice-out | Apr 18 |
| Earliest freeze-up on record | Nov 19, 2006 |
| Latest freeze-up on record | Nov 30, 2024 |
| Earliest ice-out on record | Apr 12, 2015 |
| Latest ice-out on record | May 1, 2018 |
| Open-water season | ~223 days |
| Winters observed | 13 |
| Location | Crow Wing County, Minnesota |
These are dates, not an ice-safety reading
A typical freeze-up date tells you when Island 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 Island Lake has landed as early as Apr 12, 2015 and as late as May 1, 2018 — a spread of weeks around the Apr 18 median. Freeze-up has ranged from Nov 19, 2006 to Nov 30, 2024. 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. The full nutrient and algae breakdown for Island Lake is on the lake report.
Source: Minnesota DNR Climate Office ice-in / ice-out records, observations from 2006-2024.
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