Last frost date in Silverton, Oregon
March 28
Average last frost in spring. In an early year (1 in 10) it's over by March 1; in a late year (1 in 10) it comes after April 19.
November 10
Average first frost in fall. 1 year in 10 it comes by October 25.
Source: NOAA U.S. Climate Normals 1991–2020, station Silverton (USC00357823), 0.4 miles from Silverton, elevation 408 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 1 | Mar 28 | Apr 19 |
| First frost in fall | Oct 25 | Nov 10 | Dec 1 |
Frost-free days in an average year: 227
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 25 | Oct 26 |
| Frost (32°F) | Every year | Mar 28 | Nov 10 |
| Hard freeze (28°F) | Every year | Feb 25 | Nov 28 |
Nights at 32°F or colder in an average year: 44
What to plant now in Silverton
- Mustard greensAug 15 – Nov 1Now
- Garden peasSept 1 – Nov 1Now
- ParsleySept 1 – Nov 15Now
- RadishesSept 1 – Nov 15Now
- SpinachSept 15 – Nov 1Now
- Corn saladOct 1 – Dec 1Now
- Onion setsOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Asparagus plantsDec 1 – Jan 1Soon
- Spring planting calendar for an average last frost around March 30 Silverton: March 28
- Fall planting calendar for an average first frost around November 10 Silverton: November 10
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Oregon
- Woodburn 11 mi · last frost Mar 16
- Salem 13 mi · last frost Apr 3
- Molalla 14 mi · last frost Mar 16
- Wilsonville 21 mi · last frost Mar 18
- Newberg 23 mi · last frost Mar 21
Updated