When to plant in American Fork, UT
USDA Zone 7aAmerican Fork, Utah frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 7a, American Fork supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in American Fork is now 12 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
PLEASANT GROVE · 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 American Fork’s own odds, recorded at PLEASANT GROVE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 23 | May 3 | Apr 19 | Sep 29 | Oct 13 | Oct 27 |
| 32°F | May 7 | Apr 17 | Mar 30 | Oct 10 | Oct 25 | Nov 8 |
| 28°F | Apr 17 | Mar 30 | Mar 8 | Oct 21 | Nov 5 | Nov 19 |
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 American Fork, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
American Fork planting FAQ
When is the last spring frost in American Fork, UT?
On average, the last spring frost in American Fork is around April 17 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in American Fork, UT?
Expect American Fork's first fall frost near October 25 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is American Fork in?
American Fork 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 American Fork?
American Fork has about 191 frost-free days — a moderate growing season — between the average last spring frost (April 17) and first fall frost (October 25).
When should I plant tomatoes in American Fork?
For American Fork, sow tomatoes indoors about February 20–March 6 and move the seedlings out around April 24, after the last spring frost.
Never miss a window in American Fork
An email when it’s time to start seeds, transplant, and sow — timed to American Fork’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Pleasant Grove · 5 km
- Highland · 6 km
- Lindon · 8 km
- Lehi · 8 km
- Vineyard · 9 km
- Alpine · 10 km
- Saratoga Springs · 11 km
- Orem · 12 km
Frost dates recorded at PLEASANT GROVE, 5 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 American Fork, UT — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00426919. Retrieved from https://blissgarden.com/utah/american-fork.