Last frost date in Pasco, Washington
April 27
Average last frost in spring. In an early year (1 in 10) it's over by April 8; in a late year (1 in 10) it comes after May 10.
October 11
Average first frost in fall. 1 year in 10 it comes by September 28.
Source: NOAA U.S. Climate Normals 1991–2020, station Pasco Tri Cities AP (USW00024163), 0.2 miles from Pasco, elevation 407 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 8 | Apr 27 | May 10 |
| First frost in fall | Sept 28 | Oct 11 | Oct 27 |
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 9 | Sept 29 |
| Frost (32°F) | Every year | Apr 27 | Oct 11 |
| Hard freeze (28°F) | Every year | Apr 7 | Oct 23 |
Nights at 32°F or colder in an average year: 112
What to plant now in Pasco
- Spring planting calendar for an average last frost around April 30 Pasco: April 27
- Fall planting calendar for an average first frost around October 10 Pasco: October 11
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
- Kennewick 5 mi · last frost Mar 28
- Richland 8 mi · last frost Apr 6
- Walla Walla 40 mi · last frost Mar 27
- Sunnyside 42 mi · last frost May 1
- Moses Lake 60 mi · last frost Apr 27
Updated