When to plant in South Ogden, UT
USDA Zone 7aSouth Ogden, Utah frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 7a means many perennials and even some tender shrubs overwinter in South Ogden, while your frost dates still decide when annuals go out.
Frost probability
OGDEN HINKLEY AP · 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 Ogden’s own odds, recorded at OGDEN HINKLEY AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 31 | May 8 | Apr 22 | Sep 28 | Oct 11 | Oct 25 |
| 32°F | May 10 | Apr 22 | Apr 4 | Oct 7 | Oct 22 | Nov 6 |
| 28°F | Apr 21 | Apr 3 | Mar 13 | Oct 18 | Nov 2 | Nov 17 |
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 Ogden, 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.
South Ogden planting FAQ
When is the last spring frost in South Ogden, UT?
Plan for the last spring frost in South Ogden around April 22 (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 Ogden, UT?
The first fall frost in South Ogden typically arrives around October 22 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is South Ogden in?
South Ogden 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 South Ogden?
There are roughly 183 frost-free days in South Ogden (a moderate growing season), running from the average last frost around April 22 to the first fall frost near October 22.
When should I plant tomatoes in South Ogden?
In South Ogden, start tomato seeds indoors around February 25–March 11, then transplant seedlings outdoors around April 29 once the danger of frost has passed.
Never miss a window in South Ogden
An email when it’s time to start seeds, transplant, and sow — timed to South Ogden’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Ogden · 6 km
- Roy · 8 km
- West Haven · 9 km
- Clearfield · 10 km
- Clinton · 10 km
- Layton · 11 km
- West Point · 13 km
- Syracuse · 14 km
Frost dates recorded at OGDEN HINKLEY AP, 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 South Ogden, UT — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024126. Retrieved from https://blissgarden.com/utah/south-ogden.