When to plant in Heber, UT
USDA Zone 6aEverything below — frost dates, hardiness zone, and what to plant when in Heber, Utah — is derived from the closest NOAA station with complete climate normals.
A ~108-day frost-free window makes Heber a short-season garden: choose early varieties and start long-season crops indoors well ahead of the last frost. In zone 6a, Heber gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
HEBER · 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 Heber’s own odds, recorded at HEBER.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jul 2 | Jun 19 | Jun 5 | Aug 28 | Sep 9 | Sep 21 |
| 32°F | Jun 21 | Jun 4 | May 18 | Sep 6 | Sep 20 | Oct 1 |
| 28°F | Jun 8 | May 17 | May 1 | Sep 17 | Oct 1 | Oct 15 |
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 Heber, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
Heber planting FAQ
When is the last spring frost in Heber, UT?
Heber's average last spring frost falls near June 4 — 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 Heber, UT?
Expect Heber's first fall frost near September 20 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Heber in?
Heber is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Heber?
Heber has about 108 frost-free days — a short growing season — between the average last spring frost (June 4) and first fall frost (September 20).
When should I plant tomatoes in Heber?
For Heber, sow tomatoes indoors about April 9–April 23 and move the seedlings out around June 11, after the last spring frost.
Never miss a window in Heber
An email when it’s time to start seeds, transplant, and sow — timed to Heber’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Alpine · 34 km
- Pleasant Grove · 35 km
- Lindon · 36 km
- Highland · 37 km
- Cottonwood Heights · 37 km
- Orem · 38 km
- American Fork · 39 km
- Holladay · 39 km
Frost dates recorded at HEBER, 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 Heber, UT — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00423809. Retrieved from https://blissgarden.com/utah/heber.