When to plant in Worth, IL
USDA Zone 6aWorth, 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 Worth 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 3SW · 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 Worth’s own odds, recorded at CHICAGO MIDWAY AP 3SW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 6 | Apr 22 | Apr 9 | Oct 10 | Oct 22 | Nov 3 |
| 32°F | Apr 26 | Apr 10 | Mar 30 | Oct 21 | Nov 1 | Nov 16 |
| 28°F | Apr 14 | Apr 1 | Mar 15 | Oct 30 | 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 Worth, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Worth planting FAQ
When is the last spring frost in Worth, IL?
Plan for the last spring frost in Worth around April 10 (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 Worth, IL?
In Worth, the first 32°F freeze of fall lands around November 1 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Worth in?
Worth 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 Worth?
There are roughly 205 frost-free days in Worth (a moderate growing season), running from the average last frost around April 10 to the first fall frost near November 1.
When should I plant tomatoes in Worth?
In Worth, start tomato seeds indoors around February 13–February 27, then transplant seedlings outdoors around April 17 once the danger of frost has passed.
Never miss a window in Worth
An email when it’s time to start seeds, transplant, and sow — timed to Worth’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Chicago Ridge · 2 km
- Palos Heights · 3 km
- Palos Hills · 3 km
- Oak Lawn · 4 km
- Hickory Hills · 5 km
- Alsip · 5 km
- Bridgeview · 6 km
- Crestwood · 6 km
Frost dates recorded at CHICAGO MIDWAY AP 3SW, 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 Worth, IL — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00111577. Retrieved from https://blissgarden.com/illinois/worth.