When to plant in Auburn, IN
USDA Zone 6aAuburn, Indiana frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 6a, Auburn gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
GARRETT 1 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 Auburn’s own odds, recorded at GARRETT 1 S.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 27 | May 11 | Apr 28 | Sep 18 | Oct 1 | Oct 13 |
| 32°F | May 16 | May 2 | Apr 19 | Sep 26 | Oct 10 | Oct 24 |
| 28°F | May 7 | Apr 22 | Apr 8 | Oct 10 | Oct 22 | Nov 4 |
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 Auburn, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 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.
Auburn planting FAQ
When is the last spring frost in Auburn, IN?
Plan for the last spring frost in Auburn around May 2 (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 Auburn, IN?
Expect Auburn's first fall frost near October 10 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Auburn in?
Auburn 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 Auburn?
Auburn has about 161 frost-free days — a moderate growing season — between the average last spring frost (May 2) and first fall frost (October 10).
When should I plant tomatoes in Auburn?
For Auburn, sow tomatoes indoors about March 7–March 21 and move the seedlings out around May 9, after the last spring frost.
Never miss a window in Auburn
An email when it’s time to start seeds, transplant, and sow — timed to Auburn’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Kendallville · 19 km
- Huntertown · 19 km
- Fort Wayne · 32 km
- New Haven · 34 km
- Sturgis · 57 km
- Defiance · 58 km
- Coldwater · 64 km
- Huntington · 66 km
Frost dates recorded at GARRETT 1 S, 6 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 Auburn, IN — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00123207. Retrieved from https://blissgarden.com/indiana/auburn.