When to plant in McCordsville, IN
USDA Zone 6aEverything below — frost dates, hardiness zone, and what to plant when in McCordsville, Indiana — is derived from the closest NOAA station with complete climate normals.
In zone 6a, McCordsville gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
CASTLETON 2 S · 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 McCordsville’s own odds, recorded at CASTLETON 2 S.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 16 | Apr 30 | Apr 14 | Oct 3 | Oct 16 | Oct 27 |
| 32°F | May 6 | Apr 18 | Apr 3 | Oct 12 | Oct 26 | Nov 7 |
| 28°F | Apr 24 | Apr 5 | Mar 21 | Oct 25 | Nov 5 | Nov 21 |
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 McCordsville, 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.
McCordsville planting FAQ
When is the last spring frost in McCordsville, IN?
McCordsville's average last spring frost falls near April 18 — 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 McCordsville, IN?
The first fall frost in McCordsville typically arrives around October 26 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is McCordsville in?
McCordsville 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 McCordsville?
McCordsville has about 191 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 26).
When should I plant tomatoes in McCordsville?
For McCordsville, sow tomatoes indoors about February 21–March 7 and move the seedlings out around April 25, after the last spring frost.
Never miss a window in McCordsville
An email when it’s time to start seeds, transplant, and sow — timed to McCordsville’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lawrence · 7 km
- Fishers · 8 km
- Greenfield · 17 km
- Noblesville · 17 km
- Carmel · 21 km
- Indianapolis · 24 km
- Beech Grove · 25 km
- Westfield · 25 km
Frost dates recorded at CASTLETON 2 S, 12 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 McCordsville, IN — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00121326. Retrieved from https://blissgarden.com/indiana/mccordsville.