When to plant in Celina, OH
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Celina, Ohio — all computed from Celina's nearest NOAA weather station.
Zone 6a means Celina sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average last spring frost in Celina is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
CELINA 3 NE · 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 Celina’s own odds, recorded at CELINA 3 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 20 | May 5 | Apr 22 | Sep 22 | Oct 5 | Oct 19 |
| 32°F | May 10 | Apr 27 | Apr 12 | Oct 3 | Oct 19 | Nov 1 |
| 28°F | May 2 | Apr 15 | Apr 1 | Oct 17 | Oct 31 | Nov 13 |
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 Celina, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 34 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.
Celina planting FAQ
When is the last spring frost in Celina, OH?
Celina's average last spring frost falls near April 27 — 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 Celina, OH?
In Celina, the first 32°F freeze of fall lands around October 19 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Celina in?
Celina 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 Celina?
There are roughly 175 frost-free days in Celina (a moderate growing season), running from the average last frost around April 27 to the first fall frost near October 19.
When should I plant tomatoes in Celina?
In Celina, start tomato seeds indoors around March 2–March 16, then transplant seedlings outdoors around May 4 once the danger of frost has passed.
Never miss a window in Celina
An email when it’s time to start seeds, transplant, and sow — timed to Celina’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at CELINA 3 NE, 3 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 Celina, OH — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00331390. Retrieved from https://blissgarden.com/ohio/celina.