When to plant in Salt Lake City, UT
USDA Zone 7bSalt Lake City, 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 7b, Salt Lake City 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 Salt Lake City is now 10 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
SALT LAKE TRIAD CTR · 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 Salt Lake City’s own odds, recorded at SALT LAKE TRIAD CTR.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 9 | Apr 18 | Mar 28 | Oct 12 | Oct 28 | Nov 13 |
| 32°F | Apr 19 | Mar 31 | Mar 7 | Oct 23 | Nov 8 | Nov 25 |
| 28°F | Apr 2 | Mar 8 | Feb 17 | Nov 1 | Nov 18 | Dec 6 |
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 Salt Lake City, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 9 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.
Salt Lake City planting FAQ
When is the last spring frost in Salt Lake City, UT?
Salt Lake City's average last spring frost falls near March 31 — 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 Salt Lake City, UT?
The first fall frost in Salt Lake City typically arrives around November 8 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Salt Lake City in?
Salt Lake City is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Salt Lake City?
Salt Lake City has about 222 frost-free days — a long growing season — between the average last spring frost (March 31) and first fall frost (November 8).
When should I plant tomatoes in Salt Lake City?
For Salt Lake City, sow tomatoes indoors about February 3–February 17 and move the seedlings out around April 7, after the last spring frost.
Never miss a window in Salt Lake City
An email when it’s time to start seeds, transplant, and sow — timed to Salt Lake City’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- North Salt Lake · 8 km
- South Salt Lake · 8 km
- Woods Cross · 11 km
- West Valley City · 12 km
- Bountiful · 12 km
- Millcreek · 13 km
- Taylorsville · 13 km
- Murray · 15 km
Frost dates recorded at SALT LAKE TRIAD CTR, 3 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 Salt Lake City, UT — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00427606. Retrieved from https://blissgarden.com/utah/salt-lake-city.