When to plant in Highland, UT
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Highland, Utah — all computed from Highland's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Highland, while your frost dates still decide when annuals go out.
Frost probability
ALPINE · 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 Highland’s own odds, recorded at ALPINE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 10 | May 20 | May 4 | Sep 18 | Oct 1 | Oct 15 |
| 32°F | May 26 | May 3 | Apr 18 | Sep 29 | Oct 12 | Oct 26 |
| 28°F | May 5 | Apr 16 | Mar 29 | Oct 8 | Oct 24 | Nov 8 |
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 Highland, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 8 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.
Highland planting FAQ
When is the last spring frost in Highland, UT?
On average, the last spring frost in Highland is around May 3 (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 Highland, UT?
In Highland, the first 32°F freeze of fall lands around October 12 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Highland in?
Highland 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 Highland?
There are roughly 162 frost-free days in Highland (a moderate growing season), running from the average last frost around May 3 to the first fall frost near October 12.
When should I plant tomatoes in Highland?
In Highland, start tomato seeds indoors around March 8–March 22, then transplant seedlings outdoors around May 10 once the danger of frost has passed.
Never miss a window in Highland
An email when it’s time to start seeds, transplant, and sow — timed to Highland’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Alpine · 4 km
- American Fork · 6 km
- Lehi · 6 km
- Pleasant Grove · 8 km
- Draper · 10 km
- Lindon · 12 km
- Bluffdale · 13 km
- Saratoga Springs · 14 km
Frost dates recorded at ALPINE, 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 Highland, UT — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00420061. Retrieved from https://blissgarden.com/utah/highland.