When to plant in Clarksville, IN
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Clarksville, Indiana — all computed from Clarksville's nearest NOAA weather station.
In zone 7a, Clarksville supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
LOUISVILLE MCALPINE · 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 Clarksville’s own odds, recorded at LOUISVILLE MCALPINE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 11 | Mar 26 | Oct 21 | Nov 1 | Nov 13 |
| 32°F | Apr 14 | Mar 31 | Mar 14 | Oct 31 | Nov 9 | Nov 25 |
| 28°F | Apr 2 | Mar 18 | Feb 28 | Nov 5 | Nov 20 | Dec 6 |
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 Clarksville, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Clarksville planting FAQ
When is the last spring frost in Clarksville, IN?
Clarksville's average last spring frost falls near March 31 — 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 Clarksville, IN?
The first fall frost in Clarksville typically arrives around November 9 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Clarksville in?
Clarksville is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Clarksville?
Clarksville has about 223 frost-free days — a long growing season — between the average last spring frost (March 31) and first fall frost (November 9).
When should I plant tomatoes in Clarksville?
For Clarksville, sow tomatoes indoors about February 3–February 17 and move the seedlings out around April 7, after the last spring frost.
Never miss a window in Clarksville
An email when it’s time to start seeds, transplant, and sow — timed to Clarksville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- New Albany · 5 km
- Jeffersonville · 6 km
- Sellersburg · 9 km
- St. Matthews · 14 km
- Shively · 14 km
- Lyndon · 17 km
- Louisville/Jefferson County metro government · 20 km
- Jeffersontown · 22 km
Frost dates recorded at LOUISVILLE MCALPINE, 5 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 Clarksville, IN — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00154955. Retrieved from https://blissgarden.com/indiana/clarksville.