When to plant in Fort Thomas, KY
USDA Zone 6bFort Thomas, Kentucky frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 6b means Fort Thomas sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
CINCINNATI LUNKEN 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 Fort Thomas’s own odds, recorded at CINCINNATI LUNKEN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 14 | Apr 29 | Apr 14 | Oct 2 | Oct 14 | Oct 27 |
| 32°F | May 3 | Apr 16 | Apr 2 | Oct 12 | Oct 25 | Nov 5 |
| 28°F | Apr 18 | Apr 2 | Mar 19 | Oct 24 | Nov 4 | Nov 18 |
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 Fort Thomas, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 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.
Fort Thomas planting FAQ
When is the last spring frost in Fort Thomas, KY?
Plan for the last spring frost in Fort Thomas 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 Fort Thomas, KY?
Expect Fort Thomas's first fall frost near October 25 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Fort Thomas in?
Fort Thomas 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 Fort Thomas?
There are roughly 192 frost-free days in Fort Thomas (a moderate growing season), running from the average last frost around April 16 to the first fall frost near October 25.
When should I plant tomatoes in Fort Thomas?
In Fort Thomas, 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 Fort Thomas
An email when it’s time to start seeds, transplant, and sow — timed to Fort Thomas’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Newport · 3 km
- Covington · 8 km
- Cincinnati · 8 km
- Norwood · 9 km
- Forestville · 10 km
- Erlanger · 13 km
- Alexandria · 14 km
- Finneytown · 16 km
Frost dates recorded at CINCINNATI LUNKEN 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 Fort Thomas, KY — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00093812. Retrieved from https://blissgarden.com/kentucky/fort-thomas.