When to plant in Clayton, OH
USDA Zone 6aEverything below — frost dates, hardiness zone, and what to plant when in Clayton, Ohio — is derived from the closest NOAA station with complete climate normals.
In zone 6a, Clayton gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in Clayton is now 6 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
DAYTON INTL AP · 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 Clayton’s own odds, recorded at DAYTON INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 13 | Apr 27 | Apr 13 | Oct 5 | Oct 18 | Oct 30 |
| 32°F | May 3 | Apr 16 | Apr 2 | Oct 16 | Oct 28 | Nov 9 |
| 28°F | Apr 19 | Apr 4 | Mar 21 | Oct 26 | Nov 6 | Nov 23 |
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 Clayton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 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.
Clayton planting FAQ
When is the last spring frost in Clayton, OH?
On average, the last spring frost in Clayton is around April 16 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Clayton, OH?
Expect Clayton's first fall frost near October 28 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Clayton in?
Clayton is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Clayton?
Clayton has about 195 frost-free days — a moderate growing season — between the average last spring frost (April 16) and first fall frost (October 28).
When should I plant tomatoes in Clayton?
For Clayton, sow tomatoes indoors about February 19–March 5 and move the seedlings out around April 23, after the last spring frost.
Never miss a window in Clayton
An email when it’s time to start seeds, transplant, and sow — timed to Clayton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at DAYTON INTL AP, 10 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 Clayton, OH — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00093815. Retrieved from https://blissgarden.com/ohio/clayton.