Last frost date in La Grande, Oregon
May 6
Average last frost in spring. In an early year (1 in 10) it's over by April 21; in a late year (1 in 10) it comes after May 26.
October 1
Average first frost in fall. 1 year in 10 it comes by September 17.
Source: NOAA U.S. Climate Normals 1991–2020, station La Grande (USC00354622), 0.8 miles from La Grande, elevation 2,755 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 21 | May 6 | May 26 |
| First frost in fall | Sept 17 | Oct 1 | Oct 16 |
Frost-free days in an average year: 146
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 26 | Sept 19 |
| Frost (32°F) | Every year | May 6 | Oct 1 |
| Hard freeze (28°F) | Every year | Apr 19 | Oct 14 |
Nights at 32°F or colder in an average year: 136
What to plant now in La Grande
- Spring planting calendar for an average last frost around May 10 La Grande: May 6
- Fall planting calendar for an average first frost around September 30 La Grande: October 1
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
- Baker City 40 mi · last frost May 25
- Pendleton 43 mi · last frost Apr 22
- Hermiston 68 mi · last frost Apr 26
- Ontario 105 mi · last frost Apr 22
- The Dalles 150 mi · last frost Apr 11
Updated