Frost dates for Roseburg, Oregon
In a typical year, Roseburg’s last spring frost lands around Mar 19 and the first fall frost around Nov 20, a growing season of about 246 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 8b.
Right now the growing season is open, with about 26 days until the typical first fall frost.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Feb 18 | Oct 27 |
| 50 percent | Mar 19 | Nov 20 |
| 90 percent | Apr 13 | Dec 17 |
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 Roseburg is typically around 54°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Roseburg
- Radish (Cherry Belle)
- Garlic (Music)
Timing comes from the same temperature engine the app uses, run against Roseburg’s normals for today.
Common questions
When is the last frost in Roseburg, Oregon?
Roseburg’s last spring frost falls around March 19 in a typical year. One year in ten it is done by February 18, and one year in ten frost holds on until April 13. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Roseburg?
The first fall frost arrives around November 20 in a typical year, as early as October 27 in an early year and as late as December 17 in a late one.
How long is the growing season in Roseburg?
About 246 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Roseburg in?
Roseburg is in USDA hardiness zone 8b 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
- North Bend, OR (around Feb 21 to Dec 9)
- Eugene, OR (around Apr 11 to Oct 23)
- Medford, OR (around Apr 8 to Oct 29)
- Klamath Falls, OR (around Jun 9 to Sep 18)
- Newport, OR (around Mar 21 to Nov 27)
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