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Will it freeze in Grand Rapids in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 22°F (Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST).
Tonight: forecast low 22°F. Hard freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
7 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 22°F Hard freeze · Mostly Cloudy
- Fri, Nov 6 23°F Hard freeze · Mostly Cloudy
- Sat, Nov 7 30°F Freeze · Mostly Clear
- Sun, Nov 8 33°F Frost possible · Partly Cloudy
- Mon, Nov 9 32°F Freeze · Mostly Clear
- Tue, Nov 10 29°F Freeze · Partly Cloudy
- Wed, Nov 11 29°F Freeze · Partly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Grand Rapids
The median first fall hard-freeze date (28°F) is October 5, from NOAA’s 1991–2020 Climate Normals at Grand Rpds Forest Lab. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | May 16 · May 29 · Jun 13 | Aug 30 · Sep 15 · Sep 27 | 107 days |
| 32°F freeze | May 3 · May 17 · May 31 | Sep 10 · Sep 24 · Oct 7 | 130 days |
| 28°F hard freeze | Apr 24 · May 6 · May 19 | Sep 20 · Oct 5 · Oct 20 | 152 days |
Average high temperature by month
1991–2020 normals at Grand Rpds Forest Lab
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Grand Rapids, MN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Grand Rpds Forest Lab (station USC00213303, elevation 1,310 ft), 1.7 mi from Grand Rapids. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Grand Rapids
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Hibbing, MN | 30 mi | Jun 5 | Sep 8 |
| Virginia, MN | 52 mi | May 12 | Oct 1 |
| Cloquet, MN | 60 mi | May 26 | Sep 23 |
| Bemidji, MN | 65 mi | May 17 | Sep 26 |
| Hermantown, MN | 68 mi | May 18 | Oct 1 |
| Brainerd, MN | 69 mi | May 8 | Sep 29 |
| Baxter, MN | 71 mi | May 8 | Sep 29 |
| Duluth, MN | 73 mi | May 14 | Oct 12 |
| Superior, WI | 78 mi | May 6 | Oct 9 |
| International Falls, MN | 93 mi | May 29 | Sep 13 |
Frequently asked questions
When is the last frost in Grand Rapids?
On average, the last spring frost (32°F) in Grand Rapids is around May 17. In about 1 year in 10 it comes after May 31, and in 9 years in 10 it comes after May 3.
When is the first frost in Grand Rapids?
The first fall frost (32°F) usually arrives around September 24. There’s a 10% chance of a freeze by September 10 and a 90% chance by October 7.
Can it frost in Grand Rapids after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 29.
What growing zone is Grand Rapids?
Grand Rapids is in USDA Plant Hardiness Zone 4a (average annual extreme minimum temperature −30 to −25°F), based on the 2023 USDA map for ZIP code 55744. See growing zones in Minnesota.
More: all Minnesota frost dates · Minnesota growing zones · frost vs. freeze