When to plant in Chubbuck, ID
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Chubbuck, Idaho — all computed from Chubbuck's nearest NOAA weather station.
In zone 6b, Chubbuck gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
POCATELLO 2 NE · 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 Chubbuck’s own odds, recorded at POCATELLO 2 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 18 | Jun 5 | May 17 | Sep 5 | Sep 21 | Oct 4 |
| 32°F | Jun 6 | May 16 | Apr 30 | Sep 14 | Oct 2 | Oct 18 |
| 28°F | May 18 | May 1 | Apr 16 | Sep 26 | Oct 13 | Oct 29 |
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 Chubbuck, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 9 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.
Chubbuck planting FAQ
When is the last spring frost in Chubbuck, ID?
Chubbuck's average last spring frost falls near May 16 — 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 Chubbuck, ID?
The first fall frost in Chubbuck typically arrives around October 2 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Chubbuck in?
Chubbuck is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Chubbuck?
Chubbuck has about 139 frost-free days — a short growing season — between the average last spring frost (May 16) and first fall frost (October 2).
When should I plant tomatoes in Chubbuck?
For Chubbuck, sow tomatoes indoors about March 21–April 4 and move the seedlings out around May 23, after the last spring frost.
Never miss a window in Chubbuck
An email when it’s time to start seeds, transplant, and sow — timed to Chubbuck’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Pocatello · 6 km
- Blackfoot · 31 km
- Idaho Falls · 71 km
- Ammon · 73 km
- Rexburg · 113 km
- Burley · 117 km
- Smithfield · 132 km
- Tremonton · 136 km
Frost dates recorded at POCATELLO 2 NE, 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 Chubbuck, ID — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00107208. Retrieved from https://blissgarden.com/idaho/chubbuck.