Frost dates for Pasadena, California
In a typical year, Pasadena’s last spring frost lands around Jan 8 and the first fall frost around Jan 7, a growing season of about 364 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 10b.
Right now the growing season is open, with about 74 days until the typical first fall frost.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Dec 20 | Dec 20 |
| 50 percent | Jan 8 | Jan 7 |
| 90 percent | Feb 17 | Feb 14 |
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 Pasadena is typically around 68°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Pasadena
- Eggplant (Black Beauty)
- Basil (Genovese)
- Hot pepper (Jalapeño)
- Tomato (Sungold)
- Zucchini (Black Beauty)
- Bush bean (Blue Lake Bush 274)
- Sweet pepper (California Wonder)
- Okra (Clemson Spineless)
Timing comes from the same temperature engine the app uses, run against Pasadena’s normals for today.
Common questions
When is the last frost in Pasadena, California?
Pasadena’s last spring frost falls around January 8 in a typical year. One year in ten it is done by December 20, and one year in ten frost holds on until February 17. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Pasadena?
The first fall frost arrives around January 7 in a typical year, as early as December 20 in an early year and as late as February 14 in a late one.
How long is the growing season in Pasadena?
About 364 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Pasadena in?
Pasadena is in USDA hardiness zone 10b under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Glendale, CA (around Jan 2 to Dec 26)
- Los Angeles, CA (around Jan 8 to Jan 7)
- Fullerton, CA (around Jan 5 to Dec 25)
- Pomona, CA (around Jan 8 to Dec 28)
- Anaheim, CA (around Jan 5 to Dec 25)
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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