When to plant in La Grange Park, IL
USDA Zone 6aLa Grange Park, Illinois frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 6a means La Grange Park sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
CHICAGO MIDWAY AP · 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 Grange Park’s own odds, recorded at CHICAGO MIDWAY AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 8 | Apr 23 | Apr 9 | Oct 8 | Oct 21 | Nov 1 |
| 32°F | Apr 27 | Apr 11 | Mar 30 | Oct 20 | Oct 31 | Nov 14 |
| 28°F | Apr 14 | Apr 1 | Mar 15 | Oct 31 | Nov 11 | Nov 26 |
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 Grange Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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 Grange Park planting FAQ
When is the last spring frost in La Grange Park, IL?
La Grange Park's average last spring frost falls near April 11 — 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 La Grange Park, IL?
In La Grange Park, the first 32°F freeze of fall lands around October 31 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is La Grange Park in?
La Grange Park 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 Grange Park?
There are roughly 203 frost-free days in La Grange Park (a moderate growing season), running from the average last frost around April 11 to the first fall frost near October 31.
When should I plant tomatoes in La Grange Park?
In La Grange Park, start tomato seeds indoors around February 14–February 28, then transplant seedlings outdoors around April 18 once the danger of frost has passed.
Never miss a window in La Grange Park
An email when it’s time to start seeds, transplant, and sow — timed to La Grange Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Brookfield · 2 km
- Westchester · 3 km
- La Grange · 3 km
- Western Springs · 4 km
- Lyons · 5 km
- Hinsdale · 6 km
- Bellwood · 6 km
- Maywood · 6 km
Frost dates recorded at CHICAGO MIDWAY AP, 11 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 Grange Park, IL — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014819. Retrieved from https://blissgarden.com/illinois/la-grange-park.