Last frost date in Airway Heights, Washington
April 26
Average last frost in spring. In an early year (1 in 10) it's over by April 9; in a late year (1 in 10) it comes after May 10.
October 12
Average first frost in fall. 1 year in 10 it comes by September 29.
Source: NOAA U.S. Climate Normals 1991–2020, station Spokane International AP (USW00024157), 2.9 miles from Airway Heights, elevation 2,353 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 9 | Apr 26 | May 10 |
| First frost in fall | Sept 29 | Oct 12 | Oct 28 |
Frost-free days in an average year: 168
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 8 | Oct 1 |
| Frost (32°F) | Every year | Apr 26 | Oct 12 |
| Hard freeze (28°F) | Every year | Apr 6 | Oct 23 |
Nights at 32°F or colder in an average year: 132
What to plant now in Airway Heights
- Spring planting calendar for an average last frost around April 30 Airway Heights: April 26
- Fall planting calendar for an average first frost around October 10 Airway Heights: October 12
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 Washington
- Spokane 7 mi · last frost Apr 26
- Cheney 11 mi · last frost May 30
- Pullman 66 mi · last frost May 6
- Moses Lake 87 mi · last frost Apr 27
- Walla Walla 115 mi · last frost Mar 27
Updated