When to plant in Chillicothe, OH
USDA Zone 6bChillicothe, Ohio frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 6b, Chillicothe gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in Chillicothe is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
CHILLICOTHE MOUND CITY · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Chillicothe’s own odds, recorded at CHILLICOTHE MOUND CITY.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 17 | Apr 30 | Apr 16 | Sep 27 | Oct 10 | Oct 24 |
| 32°F | May 7 | Apr 20 | Apr 6 | Oct 7 | Oct 22 | Nov 4 |
| 28°F | Apr 22 | Apr 6 | Mar 25 | Oct 19 | Nov 2 | Nov 16 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Chillicothe, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 30 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Chillicothe planting FAQ
When is the last spring frost in Chillicothe, OH?
Chillicothe's average last spring frost falls near April 20 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Chillicothe, OH?
Expect Chillicothe's first fall frost near October 22 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Chillicothe in?
Chillicothe is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Chillicothe?
Chillicothe has about 185 frost-free days — a moderate growing season — between the average last spring frost (April 20) and first fall frost (October 22).
When should I plant tomatoes in Chillicothe?
For Chillicothe, sow tomatoes indoors about February 23–March 9 and move the seedlings out around April 27, after the last spring frost.
Never miss a window in Chillicothe
An email when it’s time to start seeds, transplant, and sow — timed to Chillicothe’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Circleville · 29 km
- Washington Court House · 43 km
- Lancaster · 54 km
- Canal Winchester · 58 km
- Grove City · 59 km
- Pickerington · 64 km
- Portsmouth · 65 km
- Bexley · 70 km
Frost dates recorded at CHILLICOTHE MOUND CITY, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Chillicothe, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00331528. Retrieved from https://blissgarden.com/ohio/chillicothe.