When to plant in South Salt Lake, UT
USDA Zone 7bEverything below — frost dates, hardiness zone, and what to plant when in South Salt Lake, Utah — is derived from the closest NOAA station with complete climate normals.
In zone 7b, South Salt Lake 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 South Salt Lake 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 South Salt Lake’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 South Salt Lake, 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.
South Salt Lake planting FAQ
When is the last spring frost in South Salt Lake, UT?
Plan for the last spring frost in South Salt Lake around March 31 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in South Salt Lake, UT?
Expect South Salt Lake's first fall frost near November 8 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is South Salt Lake in?
South Salt Lake 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 South Salt Lake?
South Salt Lake 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 South Salt Lake?
For South Salt Lake, 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 South Salt Lake
An email when it’s time to start seeds, transplant, and sow — timed to South Salt Lake’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Millcreek · 6 km
- Murray · 6 km
- Taylorsville · 7 km
- Holladay · 8 km
- Salt Lake City · 8 km
- West Valley City · 10 km
- Midvale · 10 km
- Kearns · 11 km
Frost dates recorded at SALT LAKE TRIAD CTR, 7 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 South Salt Lake, UT — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00427606. Retrieved from https://blissgarden.com/utah/south-salt-lake.