When to plant in Tremonton, UT
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Tremonton, Utah — all computed from Tremonton's nearest NOAA weather station.
In zone 6b, Tremonton gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average last spring frost in Tremonton is now 12 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TREMONTON · 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 Tremonton’s own odds, recorded at TREMONTON.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 29 | May 6 | Apr 23 | Sep 25 | Oct 7 | Oct 19 |
| 32°F | May 9 | Apr 24 | Apr 8 | Oct 3 | Oct 17 | Nov 1 |
| 28°F | Apr 26 | Apr 9 | Mar 20 | Oct 14 | Oct 26 | Nov 10 |
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 Tremonton, 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.
Tremonton planting FAQ
When is the last spring frost in Tremonton, UT?
Tremonton's average last spring frost falls near April 24 — 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 Tremonton, UT?
The first fall frost in Tremonton typically arrives around October 17 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Tremonton in?
Tremonton 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 Tremonton?
Tremonton has about 176 frost-free days — a moderate growing season — between the average last spring frost (April 24) and first fall frost (October 17).
When should I plant tomatoes in Tremonton?
For Tremonton, sow tomatoes indoors about February 27–March 13 and move the seedlings out around May 1, after the last spring frost.
Never miss a window in Tremonton
An email when it’s time to start seeds, transplant, and sow — timed to Tremonton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Brigham City · 26 km
- Logan · 29 km
- Hyrum · 30 km
- North Logan · 32 km
- Smithfield · 33 km
- Pleasant View · 46 km
- North Ogden · 49 km
- Ogden · 57 km
Frost dates recorded at TREMONTON, 2 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 Tremonton, UT — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00428817. Retrieved from https://blissgarden.com/utah/tremonton.