Frost dates for Tucson, Arizona
In a typical year, Tucson’s last spring frost lands around Jan 20 and the first fall frost around Dec 17, a growing season of about 331 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9b.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Dec 19 | Nov 28 |
| 50 percent | Jan 20 | Dec 17 |
| 90 percent | Feb 18 | Jan 12 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Tucson is typically around 85°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Tucson
- Tomato (Roma)
- Radicchio (Rossa di Verona)
- Pole bean (Blue Lake Pole)
- Fava bean (Aquadulce)
- Escarole (Batavian Full Heart)
- Fennel (Trieste)
- Hot pepper (Jalapeño)
- Endive (Green Curled Endive)
Timing comes from the same temperature engine the app uses, run against Tucson’s normals for today.
Nearby cities
- Gilbert, AZ (around Feb 1 to Dec 10)
- Chandler, AZ (around Feb 13 to Dec 5)
- Mesa, AZ (around Feb 13 to Dec 5)
- Tempe, AZ (around Feb 13 to Dec 5)
- Scottsdale, AZ (around Feb 13 to Dec 5)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
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