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Will it freeze in Chillicothe 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 43°F. Above 36°F.
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 43°F Above 36°F · Mostly Clear
- Fri, Nov 6 34°F Frost possible · Partly Cloudy
- Sat, Nov 7 31°F Freeze · Partly Cloudy
- Sun, Nov 8 32°F Freeze · Mostly Clear
- Mon, Nov 9 36°F Frost possible · Mostly Clear
- Tue, Nov 10 34°F Frost possible · Mostly Clear
- 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 Chillicothe
The median first fall hard-freeze date (28°F) is November 2, from NOAA’s 1991–2020 Climate Normals at Chillicothe Mound City. 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 16 · Apr 30 · May 17 | Sep 27 · Oct 10 · Oct 24 | 162 days |
| 32°F freeze | Apr 6 · Apr 20 · May 7 | Oct 7 · Oct 22 · Nov 4 | 184 days |
| 28°F hard freeze | Mar 25 · Apr 6 · Apr 22 | Oct 19 · Nov 2 · Nov 16 | 207 days |
Average high temperature by month
1991–2020 normals at Chillicothe Mound City
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 Chillicothe, OH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Chillicothe Mound City (station USC00331528, elevation 650 ft), 2.4 mi from Chillicothe. 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 Chillicothe
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Circleville, OH | 18 mi | Apr 17 | Oct 28 |
| Washington Court House, OH | 27 mi | Apr 23 | Oct 21 |
| Jackson, OH | 28 mi | Apr 22 | Oct 21 |
| Wellston, OH | 29 mi | Apr 22 | Oct 21 |
| Lancaster, OH | 34 mi | Apr 22 | Oct 24 |
| Hillsboro, OH | 34 mi | Apr 24 | Oct 20 |
| Logan, OH | 34 mi | Apr 30 | Oct 14 |
| Groveport, OH | 36 mi | Apr 23 | Oct 19 |
| Canal Winchester, OH | 36 mi | Apr 23 | Oct 19 |
| Obetz, OH | 36 mi | Apr 23 | Oct 19 |
Frequently asked questions
When is the last frost in Chillicothe?
On average, the last spring frost (32°F) in Chillicothe is around April 20. In about 1 year in 10 it comes after May 7, and in 9 years in 10 it comes after April 6.
When is the first frost in Chillicothe?
The first fall frost (32°F) usually arrives around October 22. There’s a 10% chance of a freeze by October 7 and a 90% chance by November 4.
Can it frost in Chillicothe 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 30.
What growing zone is Chillicothe?
Chillicothe 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 45601. See growing zones in Ohio.
More: all Ohio frost dates · Ohio growing zones · frost vs. freeze