Frost dates for Portland, Oregon
In a typical year, Portland’s last spring frost lands around Feb 25 and the first fall frost around Dec 1, a growing season of about 279 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Jan 24 | Nov 10 |
| 50 percent | Feb 25 | Dec 1 |
| 90 percent | Mar 21 | Dec 27 |
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 Portland is typically around 69°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Portland
- Parsley (Giant of Italy)
- Collards (Georgia Southern)
- Cabbage (Red Acre)
- Leek (King Richard)
- Carrot (Bolero)
- Lettuce (Great Lakes 118)
- Fennel (Solaris)
- Cauliflower (Graffiti)
Timing comes from the same temperature engine the app uses, run against Portland’s normals for today.
Nearby cities
- Vancouver, WA (around Mar 29 to Nov 9)
- Gresham, OR (around Mar 16 to Nov 20)
- Salem, OR (around Apr 3 to Nov 1)
- Eugene, OR (around Apr 11 to Oct 23)
- Tacoma, WA (around Mar 8 to Nov 14)
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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