Last frost date in Jackson, Wyoming
June 20
Average last frost in spring. In an early year (1 in 10) it's over by June 5; in a late year (1 in 10) it comes after July 9.
August 31
Average first frost in fall. 1 year in 10 it comes by August 12.
Source: NOAA U.S. Climate Normals 1991–2020, station Moose (USC00486428), 12.9 miles from Jackson, elevation 6,444 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | June 5 | June 20 | July 9 |
| First frost in fall | Aug 12 | Aug 31 | Sept 13 |
Frost-free days in an average year: 70
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | — | — |
| Frost (32°F) | Every year | June 20 | Aug 31 |
| Hard freeze (28°F) | Every year | June 2 | Sept 13 |
Nights at 32°F or colder in an average year: 244
What to plant now in Jackson
Nothing in USDA's planting table is in its window in Jackson right now, or opens in the next 45 days.
- Spring planting calendar for an average last frost around June 10 Jackson: June 20
- Fall planting calendar for an average first frost around August 30 Jackson: August 31
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 Wyoming
- Cody 112 mi · last frost May 12
- Riverton 124 mi · last frost May 12
- Green River 151 mi · last frost May 24
- Rock Springs 152 mi · last frost May 24
- Evanston 153 mi · last frost June 12
Updated