Last frost date in Prineville, Oregon
June 1
Average last frost in spring. In an early year (1 in 10) it's over by May 8; in a late year (1 in 10) it comes after June 22.
September 22
Average first frost in fall. 1 year in 10 it comes by August 31.
Source: NOAA U.S. Climate Normals 1991–2020, station Prineville (USC00356883), 1 miles from Prineville, elevation 2,876 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | May 8 | June 1 | June 22 |
| First frost in fall | Aug 31 | Sept 22 | Oct 9 |
Frost-free days in an average year: 113
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | June 19 | Sept 4 |
| Frost (32°F) | Every year | June 1 | Sept 22 |
| Hard freeze (28°F) | Every year | May 5 | Oct 8 |
Nights at 32°F or colder in an average year: 166
What to plant now in Prineville
- Spring planting calendar for an average last frost around May 30 Prineville: June 1
- Fall planting calendar for an average first frost around September 20 Prineville: September 22
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
- Redmond 16 mi · last frost June 9
- Bend 28 mi · last frost June 6
- The Dalles 91 mi · last frost Apr 11
- Sweet Home 91 mi · last frost Apr 12
- Lebanon 102 mi · last frost Mar 14
Updated