When to plant in Fortuna Foothills, AZ
USDA Zone 10aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Fortuna Foothills, Arizona — all computed from Fortuna Foothills's nearest NOAA weather station.
With about 355 frost-free days, Fortuna Foothills supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. Heads up: the nearest complete-normals station is about 19 km from Fortuna Foothills, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. In zone 10a, frost is a minor factor for Fortuna Foothills — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
YUMA PROVING GROUND · 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 Fortuna Foothills’s own odds, recorded at YUMA PROVING GROUND.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 18 | Jan 18 | Dec 23 | Nov 25 | Dec 13 | Dec 29 |
| 32°F | Feb 9 | Jan 4 | Dec 11 | Dec 3 | Dec 25 | Jan 25 |
| 28°F | Feb 13 | Jan 9 | Dec 20 | Dec 20 | Jan 9 | Feb 12 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Fortuna Foothills, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 27 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.
Fortuna Foothills planting FAQ
When is the last spring frost in Fortuna Foothills, AZ?
Plan for the last spring frost in Fortuna Foothills around January 4 (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 Fortuna Foothills, AZ?
Expect Fortuna Foothills's first fall frost near December 25 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Fortuna Foothills in?
Fortuna Foothills is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Fortuna Foothills?
Fortuna Foothills has about 355 frost-free days — a long growing season — between the average last spring frost (January 4) and first fall frost (December 25).
When should I plant tomatoes in Fortuna Foothills?
For Fortuna Foothills, sow tomatoes indoors about November 9–November 23 and move the seedlings out around January 11, after the last spring frost.
Never miss a window in Fortuna Foothills
An email when it’s time to start seeds, transplant, and sow — timed to Fortuna Foothills’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at YUMA PROVING GROUND, 19 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 Fortuna Foothills, AZ — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003125. Retrieved from https://blissgarden.com/arizona/fortuna-foothills.