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Will it freeze in Allegan in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 32°F (Fri, Nov 6, 6:00 PM EST to Sat, Nov 7, 6:00 AM EST).
Tonight: forecast low 36°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
6 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 36°F Frost possible · Chance Rain Showers then Mostly Cloudy
- Fri, Nov 6 32°F Freeze · Mostly Cloudy
- Sat, Nov 7 31°F Freeze · Partly Cloudy
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 41°F Above 36°F · Mostly Clear
- Tue, Nov 10 35°F Frost possible · Partly Cloudy
- Wed, Nov 11 35°F Frost possible · 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 Allegan
The median first fall hard-freeze date (28°F) is October 29, from NOAA’s 1991–2020 Climate Normals at Allegan 5NE. 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 1 · May 17 · Jun 1 | Sep 18 · Oct 1 · Oct 14 | 138 days |
| 32°F freeze | Apr 22 · May 4 · May 22 | Sep 30 · Oct 15 · Oct 29 | 160 days |
| 28°F hard freeze | Apr 9 · Apr 24 · May 10 | Oct 11 · Oct 29 · Nov 11 | 184 days |
Average high temperature by month
1991–2020 normals at Allegan 5NE
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 Allegan, MI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Allegan 5NE (station USC00200128, elevation 750 ft), 4.2 mi from Allegan. 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 Allegan
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Holland, MI | 21 mi | Apr 28 | Oct 21 |
| Zeeland, MI | 22 mi | Apr 28 | Oct 21 |
| Kalamazoo, MI | 22 mi | Apr 28 | Oct 18 |
| Hudsonville, MI | 23 mi | May 6 | Oct 10 |
| Wyoming, MI | 25 mi | May 6 | Oct 10 |
| Grandville, MI | 26 mi | May 6 | Oct 10 |
| Portage, MI | 26 mi | Apr 28 | Oct 18 |
| Kentwood, MI | 27 mi | Apr 30 | Oct 14 |
| Hastings, MI | 29 mi | May 3 | Oct 12 |
| East Grand Rapids, MI | 31 mi | May 6 | Oct 10 |
Frequently asked questions
When is the last frost in Allegan?
On average, the last spring frost (32°F) in Allegan is around May 4. In about 1 year in 10 it comes after May 22, and in 9 years in 10 it comes after April 22.
When is the first frost in Allegan?
The first fall frost (32°F) usually arrives around October 15. There’s a 10% chance of a freeze by September 30 and a 90% chance by October 29.
Can it frost in Allegan 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 17.
What growing zone is Allegan?
Allegan is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 49010. See growing zones in Michigan.
More: all Michigan frost dates · Michigan growing zones · frost vs. freeze