When to plant in Channahon, IL
USDA Zone 5bChannahon, 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 5b, Channahon gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average last spring frost in Channahon is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
CHANNAHON DRESDEN ISL DAM · 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 Channahon’s own odds, recorded at CHANNAHON DRESDEN ISL DAM.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 14 | Apr 30 | Apr 15 | Oct 1 | Oct 15 | Oct 28 |
| 32°F | May 3 | Apr 16 | Apr 3 | Oct 13 | Oct 26 | Nov 8 |
| 28°F | Apr 19 | Apr 5 | Mar 20 | Oct 24 | Nov 6 | 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 Channahon, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Channahon planting FAQ
When is the last spring frost in Channahon, IL?
Plan for the last spring frost in Channahon around April 16 (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 Channahon, IL?
Expect Channahon's first fall frost near October 26 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Channahon in?
Channahon is in USDA hardiness zone 5b. In zone 5b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Channahon?
Channahon has about 193 frost-free days — a moderate growing season — between the average last spring frost (April 16) and first fall frost (October 26).
When should I plant tomatoes in Channahon?
For Channahon, sow tomatoes indoors about February 19–March 5 and move the seedlings out around April 23, after the last spring frost.
Never miss a window in Channahon
An email when it’s time to start seeds, transplant, and sow — timed to Channahon’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Minooka · 3 km
- Shorewood · 11 km
- Joliet · 14 km
- Morris · 14 km
- Crest Hill · 21 km
- Plainfield · 22 km
- Manhattan · 24 km
- New Lenox · 26 km
Frost dates recorded at CHANNAHON DRESDEN ISL DAM, 3 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 Channahon, IL — Frost Dates & Zone 5b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00111420. Retrieved from https://blissgarden.com/illinois/channahon.