When to plant in Western Springs, IL
USDA Zone 6aWestern Springs, Illinois 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, Western Springs gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
LITTLE RED SCHOOL HSE · 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 Western Springs’s own odds, recorded at LITTLE RED SCHOOL HSE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 18 | Apr 30 | Apr 16 | Sep 28 | Oct 12 | Oct 24 |
| 32°F | May 5 | Apr 19 | Apr 6 | Oct 8 | Oct 22 | Nov 3 |
| 28°F | Apr 22 | Apr 7 | Mar 26 | Oct 19 | Nov 1 | Nov 16 |
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 Western Springs, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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.
Western Springs planting FAQ
When is the last spring frost in Western Springs, IL?
On average, the last spring frost in Western Springs 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 Western Springs, IL?
In Western Springs, the first 32°F freeze of fall lands around October 22 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Western Springs in?
Western Springs 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 Western Springs?
Western Springs has about 186 frost-free days — a moderate growing season — between the average last spring frost (April 19) and first fall frost (October 22).
When should I plant tomatoes in Western Springs?
For Western Springs, sow tomatoes indoors about February 22–March 8 and move the seedlings out around April 26, after the last spring frost.
Never miss a window in Western Springs
An email when it’s time to start seeds, transplant, and sow — timed to Western Springs’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- La Grange · 2 km
- Hinsdale · 2 km
- La Grange Park · 4 km
- Brookfield · 5 km
- Westchester · 5 km
- Westmont · 6 km
- Burr Ridge · 6 km
- Lyons · 7 km
Frost dates recorded at LITTLE RED SCHOOL HSE, 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 Western Springs, IL — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00115110. Retrieved from https://blissgarden.com/illinois/western-springs.