When to plant in Country Club Hills, IL
USDA Zone 6aCountry Club Hills, 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 Country Club Hills sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
PARK FOREST · 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 Country Club Hills’s own odds, recorded at PARK FOREST.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 24 | May 5 | Apr 20 | Sep 27 | Oct 10 | Oct 22 |
| 32°F | May 11 | Apr 23 | Apr 9 | Oct 6 | Oct 20 | Nov 1 |
| 28°F | Apr 27 | Apr 12 | Mar 30 | Oct 18 | Oct 30 | Nov 15 |
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 Country Club Hills, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Country Club Hills planting FAQ
When is the last spring frost in Country Club Hills, IL?
Country Club Hills's average last spring frost falls near April 23 — 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 Country Club Hills, IL?
In Country Club Hills, the first 32°F freeze of fall lands around October 20 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Country Club Hills in?
Country Club Hills 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 Country Club Hills?
There are roughly 180 frost-free days in Country Club Hills (a moderate growing season), running from the average last frost around April 23 to the first fall frost near October 20.
When should I plant tomatoes in Country Club Hills?
In Country Club Hills, start tomato seeds indoors around February 26–March 12, then transplant seedlings outdoors around April 30 once the danger of frost has passed.
Never miss a window in Country Club Hills
An email when it’s time to start seeds, transplant, and sow — timed to Country Club Hills’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Hazel Crest · 3 km
- Markham · 5 km
- Oak Forest · 5 km
- Homewood · 5 km
- Matteson · 6 km
- Tinley Park · 7 km
- Midlothian · 7 km
- Harvey · 8 km
Frost dates recorded at PARK FOREST, 9 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 Country Club Hills, IL — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00116616. Retrieved from https://blissgarden.com/illinois/country-club-hills.