Last frost date in Lynden, Washington
April 18
Average last frost in spring. In an early year (1 in 10) it's over by March 27; in a late year (1 in 10) it comes after May 5.
October 18
Average first frost in fall. 1 year in 10 it comes by September 28.
Source: NOAA U.S. Climate Normals 1991–2020, station Clearbrook (USC00451484), 5.8 miles from Lynden, elevation 64 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 27 | Apr 18 | May 5 |
| First frost in fall | Sept 28 | Oct 18 | Nov 8 |
Frost-free days in an average year: 185
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 7 | Sept 29 |
| Frost (32°F) | Every year | Apr 18 | Oct 18 |
| Hard freeze (28°F) | Every year | Mar 18 | Nov 7 |
Nights at 32°F or colder in an average year: 57
What to plant now in Lynden
- Spring planting calendar for an average last frost around April 20 Lynden: April 18
- Fall planting calendar for an average first frost around October 20 Lynden: October 18
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
- Ferndale 9 mi · last frost Mar 31
- Bellingham 14 mi · last frost Apr 1
- Sedro-Woolley 32 mi · last frost Mar 27
- Anacortes 33 mi · last frost Mar 8
- Mount Vernon 37 mi · last frost Mar 24
Updated