When to plant in Tooele, UT
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Tooele, Utah — is derived from the closest NOAA station with complete climate normals.
In zone 7a, Tooele supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average first fall frost in Tooele is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TOOELE · 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 Tooele’s own odds, recorded at TOOELE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 6 | May 16 | Apr 29 | Sep 23 | Oct 6 | Oct 19 |
| 32°F | May 28 | May 2 | Apr 16 | Oct 2 | Oct 16 | Nov 2 |
| 28°F | May 7 | Apr 16 | Mar 29 | Oct 13 | Oct 27 | Nov 12 |
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 Tooele, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 23 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.
Tooele planting FAQ
When is the last spring frost in Tooele, UT?
Plan for the last spring frost in Tooele around May 2 (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 Tooele, UT?
In Tooele, the first 32°F freeze of fall lands around October 16 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Tooele in?
Tooele is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Tooele?
Tooele has about 167 frost-free days — a moderate growing season — between the average last spring frost (May 2) and first fall frost (October 16).
When should I plant tomatoes in Tooele?
For Tooele, sow tomatoes indoors about March 7–March 21 and move the seedlings out around May 9, after the last spring frost.
Never miss a window in Tooele
An email when it’s time to start seeds, transplant, and sow — timed to Tooele’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Stansbury Park · 11 km
- Grantsville · 16 km
- Herriman · 25 km
- Magna · 27 km
- South Jordan · 27 km
- West Jordan · 27 km
- Kearns · 28 km
- Riverton · 29 km
Frost dates recorded at TOOELE, 1 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 Tooele, UT — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00428771. Retrieved from https://blissgarden.com/utah/tooele.