When to plant in Terre Haute, IN
USDA Zone 6aEverything below — frost dates, hardiness zone, and what to plant when in Terre Haute, Indiana — is derived from the closest NOAA station with complete climate normals.
Zone 6a means Terre Haute sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
TERRE HAUTE INDIANA STATE · 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 Terre Haute’s own odds, recorded at TERRE HAUTE INDIANA STATE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 15 | Apr 26 | Apr 11 | Sep 26 | Oct 10 | Oct 23 |
| 32°F | May 3 | Apr 15 | Mar 31 | Oct 4 | Oct 19 | Nov 2 |
| 28°F | Apr 20 | Apr 1 | Mar 15 | Oct 14 | Oct 30 | Nov 14 |
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 Terre Haute, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 7 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.
Terre Haute planting FAQ
When is the last spring frost in Terre Haute, IN?
Terre Haute's average last spring frost falls near April 15 — 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 Terre Haute, IN?
In Terre Haute, 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 Terre Haute in?
Terre Haute 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 Terre Haute?
There are roughly 187 frost-free days in Terre Haute (a moderate growing season), running from the average last frost around April 15 to the first fall frost near October 19.
When should I plant tomatoes in Terre Haute?
In Terre Haute, start tomato seeds indoors around February 18–March 4, then transplant seedlings outdoors around April 22 once the danger of frost has passed.
Never miss a window in Terre Haute
An email when it’s time to start seeds, transplant, and sow — timed to Terre Haute’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Charleston · 69 km
- Crawfordsville · 76 km
- Danville · 78 km
- Bloomington · 81 km
- Martinsville · 81 km
- Danville · 82 km
- Mattoon · 85 km
- Vincennes · 88 km
Frost dates recorded at TERRE HAUTE INDIANA STATE, 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 Terre Haute, IN — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00128723. Retrieved from https://blissgarden.com/indiana/terre-haute.