When to plant in Vandalia, OH
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Vandalia, Ohio — is derived from the closest NOAA station with complete climate normals.
Zone 6b means Vandalia sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average first fall frost in Vandalia 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 Vandalia’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 Vandalia, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Vandalia planting FAQ
When is the last spring frost in Vandalia, OH?
Plan for the last spring frost in Vandalia around April 16 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Vandalia, OH?
The first fall frost in Vandalia typically arrives around October 28 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Vandalia in?
Vandalia 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 Vandalia?
There are roughly 195 frost-free days in Vandalia (a moderate growing season), running from the average last frost around April 16 to the first fall frost near October 28.
When should I plant tomatoes in Vandalia?
In Vandalia, start tomato seeds indoors around February 19–March 5, then transplant seedlings outdoors around April 23 once the danger of frost has passed.
Never miss a window in Vandalia
An email when it’s time to start seeds, transplant, and sow — timed to Vandalia’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at DAYTON INTL AP, 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 Vandalia, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00093815. Retrieved from https://blissgarden.com/ohio/vandalia.