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Will it freeze in Wilmington in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 32°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).
Tonight: forecast low 44°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 44°F Above 36°F · Partly Cloudy
- Fri, Nov 6 35°F Frost possible · Partly Cloudy
- Sat, Nov 7 32°F Freeze · Partly Cloudy
- Sun, Nov 8 33°F Frost possible · Mostly Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 36°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 Wilmington
The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at WFO Wilmington. 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 14 · Apr 28 · May 14 | Sep 28 · Oct 11 · Oct 24 | 165 days |
| 32°F freeze | Apr 3 · Apr 17 · May 4 | Oct 9 · Oct 22 · Nov 3 | 187 days |
| 28°F hard freeze | Mar 21 · Apr 4 · Apr 20 | Oct 20 · Nov 1 · Nov 15 | 211 days |
Average high temperature by month
1991–2020 normals at WFO Wilmington
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 Wilmington, OH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: WFO Wilmington (station USC00339220, elevation 1,053 ft), 0.6 mi from Wilmington. 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 Wilmington
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Hillsboro, OH | 19 mi | Apr 24 | Oct 20 |
| Xenia, OH | 19 mi | Apr 18 | Oct 24 |
| Bellbrook, OH | 21 mi | Apr 17 | Oct 26 |
| Lebanon, OH | 21 mi | Apr 24 | Oct 19 |
| Washington Court House, OH | 22 mi | Apr 23 | Oct 21 |
| South Lebanon, OH | 22 mi | Apr 23 | Oct 18 |
| Centerville, OH | 22 mi | Apr 17 | Oct 26 |
| Springboro, OH | 24 mi | Apr 17 | Oct 26 |
| Beavercreek, OH | 25 mi | Apr 18 | Oct 25 |
| Kettering, OH | 25 mi | Apr 18 | Oct 25 |
Frequently asked questions
When is the last frost in Wilmington?
On average, the last spring frost (32°F) in Wilmington is around April 17. In about 1 year in 10 it comes after May 4, and in 9 years in 10 it comes after April 3.
When is the first frost in Wilmington?
The first fall frost (32°F) usually arrives around October 22. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 3.
Can it frost in Wilmington 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 April 28.
What growing zone is Wilmington?
Wilmington is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 45177. See growing zones in Ohio.
More: all Ohio frost dates · Ohio growing zones · frost vs. freeze