When to plant in Stansbury Park, UT
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Stansbury Park, Utah — all computed from Stansbury Park's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Stansbury Park, while your frost dates still decide when annuals go out.
The average first fall frost in Stansbury Park is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TOOELE · 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 Stansbury Park’s own odds, recorded at TOOELE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 6 | May 16 | Apr 29 | Sep 23 | Oct 6 | Oct 19 |
| 32°F | May 28 | May 2 | Apr 16 | Oct 2 | Oct 16 | Nov 2 |
| 28°F | May 7 | Apr 16 | Mar 29 | Oct 13 | Oct 27 | Nov 12 |
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 Stansbury Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 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.
Stansbury Park planting FAQ
When is the last spring frost in Stansbury Park, UT?
Plan for the last spring frost in Stansbury Park around May 2 (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 Stansbury Park, UT?
In Stansbury Park, the first 32°F freeze of fall lands around October 16 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Stansbury Park in?
Stansbury Park 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 Stansbury Park?
There are roughly 167 frost-free days in Stansbury Park (a moderate growing season), running from the average last frost around May 2 to the first fall frost near October 16.
When should I plant tomatoes in Stansbury Park?
In Stansbury Park, start tomato seeds indoors around March 7–March 21, then transplant seedlings outdoors around May 9 once the danger of frost has passed.
Never miss a window in Stansbury Park
An email when it’s time to start seeds, transplant, and sow — timed to Stansbury Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Tooele · 11 km
- Grantsville · 14 km
- Magna · 17 km
- Kearns · 25 km
- West Valley City · 26 km
- West Jordan · 26 km
- South Jordan · 28 km
- Herriman · 29 km
Frost dates recorded at TOOELE, 11 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 Stansbury Park, UT — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00428771. Retrieved from https://blissgarden.com/utah/stansbury-park.