Frost dates for San Bernardino, California
In a typical year, San Bernardino’s last spring frost lands around Jan 27 and the first fall frost around Dec 19, a growing season of about 326 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 10a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Dec 21 | Dec 1 |
| 50 percent | Jan 27 | Dec 19 |
| 90 percent | Feb 28 | Jan 26 |
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 San Bernardino is typically around 78°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in San Bernardino
- Eggplant (Black Beauty)
- Sweet pepper (California Wonder)
- Fava bean (Aquadulce)
- Escarole (Batavian Full Heart)
- Fennel (Trieste)
- Tomato (Big Beef)
- Endive (Green Curled Endive)
- Bush bean (Blue Lake Bush 274)
Timing comes from the same temperature engine the app uses, run against San Bernardino’s normals for today.
Nearby cities
- Fontana, CA (around Jan 9 to Dec 30)
- Moreno Valley, CA (around Jan 27 to Dec 19)
- Riverside, CA (around Jan 9 to Dec 25)
- Rancho Cucamonga, CA (around Jan 4 to Dec 30)
- Ontario, CA (around Jan 4 to Dec 30)
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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