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Will it freeze in Coldwater in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 31°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).
Tonight: forecast low 39°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 39°F Above 36°F · Chance Rain Showers
- Fri, Nov 6 34°F Frost possible · Mostly Cloudy
- Sat, Nov 7 31°F Freeze · Partly Cloudy
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 35°F Frost possible · Mostly Clear
- Wed, Nov 11 36°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 Coldwater
The median first fall hard-freeze date (28°F) is October 28, from NOAA’s 1991–2020 Climate Normals at Coldwater St School. 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 | Apr 29 · May 14 · May 29 | Sep 19 · Oct 2 · Oct 15 | 141 days |
| 32°F freeze | Apr 18 · May 2 · May 18 | Sep 30 · Oct 13 · Oct 30 | 163 days |
| 28°F hard freeze | Apr 6 · Apr 21 · May 8 | Oct 12 · Oct 28 · Nov 9 | 187 days |
Average high temperature by month
1991–2020 normals at Coldwater St School
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 Coldwater, MI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Coldwater St School (station USC00201675, elevation 984 ft), 1.2 mi from Coldwater. 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 Coldwater
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Hillsdale, MI | 19 mi | May 3 | Oct 12 |
| Angola, IN | 21 mi | Apr 30 | Oct 16 |
| Marshall, MI | 22 mi | Apr 30 | Oct 19 |
| Sturgis, MI | 24 mi | Apr 26 | Oct 21 |
| Albion, MI | 24 mi | May 1 | Oct 14 |
| Battle Creek, MI | 27 mi | Apr 30 | Oct 19 |
| Springfield, MI | 29 mi | Apr 30 | Oct 19 |
| Three Rivers, MI | 32 mi | Apr 30 | Oct 17 |
| Portage, MI | 35 mi | Apr 28 | Oct 18 |
| Jackson, MI | 37 mi | May 1 | Oct 14 |
Frequently asked questions
When is the last frost in Coldwater?
On average, the last spring frost (32°F) in Coldwater is around May 2. In about 1 year in 10 it comes after May 18, and in 9 years in 10 it comes after April 18.
When is the first frost in Coldwater?
The first fall frost (32°F) usually arrives around October 13. There’s a 10% chance of a freeze by September 30 and a 90% chance by October 30.
Can it frost in Coldwater 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 14.
What growing zone is Coldwater?
Coldwater 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 49036. See growing zones in Michigan.
More: all Michigan frost dates · Michigan growing zones · frost vs. freeze