When to plant in La Porte, IN
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for La Porte, Indiana — all computed from La Porte's nearest NOAA weather station.
Zone 6a means La Porte sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
LAPORTE · 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 La Porte’s own odds, recorded at LAPORTE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 14 | Apr 30 | Apr 17 | Oct 4 | Oct 16 | Oct 29 |
| 32°F | May 3 | Apr 19 | Apr 5 | Oct 14 | Oct 27 | Nov 9 |
| 28°F | Apr 22 | Apr 7 | Mar 25 | Oct 26 | Nov 7 | Nov 23 |
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 La Porte, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 29 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.
La Porte planting FAQ
When is the last spring frost in La Porte, IN?
On average, the last spring frost in La Porte is around April 19 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in La Porte, IN?
The first fall frost in La Porte typically arrives around October 27 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is La Porte in?
La Porte 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 La Porte?
There are roughly 191 frost-free days in La Porte (a moderate growing season), running from the average last frost around April 19 to the first fall frost near October 27.
When should I plant tomatoes in La Porte?
In La Porte, start tomato seeds indoors around February 22–March 8, then transplant seedlings outdoors around April 26 once the danger of frost has passed.
Never miss a window in La Porte
An email when it’s time to start seeds, transplant, and sow — timed to La Porte’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Michigan City · 17 km
- Chesterton · 28 km
- Valparaiso · 32 km
- South Bend · 38 km
- Portage · 39 km
- Plymouth · 44 km
- Lake Station · 45 km
- Niles · 46 km
Frost dates recorded at LAPORTE, 1 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 La Porte, IN — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00124837. Retrieved from https://blissgarden.com/indiana/la-porte.