The last 36°F Spring frost date is 30% likely to be on May 20. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on May 1. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Cathlamet, WA are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
Book Recommendations (ads!)
📚 Growing Under Cover: Techniques for a More Productive, Weather-Resistant, Pest-Free Vegetable Garden
The last spring frost signals when your area is safe from freezing temperatures. Tender plants can now grow outdoors without cold damage! This marks the beginning of the growing season. Last spring frost serves as your essential starting point for planting warm-season crops. It's also time to remove winter protection from your perennials. Enjoy the longer days and warmer weather!
Start seeds indoors several weeks before your last frost date. This gives plants time to reach transplanting size when weather permits. Plan your outdoor planting schedule around your area's average last frost date. Plant some crops before and some after this date to protect against weather changes. Look for spots in your yard where frost stays longer or disappears earlier. Create your own frost map to use all available growing space and extend your season. Keep watching your local weather forecast to catch any surprise late frosts.
| Probability of frost (36°F) on or after… | |
|---|---|
| 10% chance | May 30 |
| 20% chance | May 25 |
| 30% chance | May 20 |
| 40% chance | May 17 |
| 50% chance | May 13 |
| 60% chance | May 9 |
| 70% chance | May 6 |
| 80% chance | May 1 |
| 90% chance | Apr 27 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | May 10 |
| 20% chance | May 4 |
| 30% chance | May 1 |
| 40% chance | Apr 28 |
| 50% chance | Apr 24 |
| 60% chance | Apr 20 |
| 70% chance | Apr 16 |
| 80% chance | Apr 10 |
| 90% chance | Apr 1 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 20 |
| 20% chance | Apr 11 |
| 30% chance | Apr 4 |
| 40% chance | Mar 30 |
| 50% chance | Mar 25 |
| 60% chance | Mar 17 |
| 70% chance | Mar 9 |
| 80% chance | Feb 27 |
| 90% chance | Feb 19 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Mar 13 |
| 20% chance | Mar 1 |
| 30% chance | Feb 25 |
| 40% chance | Feb 21 |
| 50% chance | Feb 16 |
| 60% chance | Feb 10 |
| 70% chance | Feb 2 |
| 80% chance | Jan 21 |
| 90% chance | Jan 5 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 23 |
| 20% chance | Feb 17 |
| 30% chance | Feb 10 |
| 40% chance | Feb 2 |
| 50% chance | Jan 24 |
| 60% chance | Jan 13 |
| 70% chance | Jan 5 |
| 80% chance | Dec 30 |
| 90% chance | Dec 14 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 17 |
| 20% chance | Feb 9 |
| 30% chance | Feb 1 |
| 40% chance | Jan 19 |
| 50% chance | Jan 6 |
| 60% chance | Jan 1 |
| 70% chance | Dec 28 |
| 80% chance | Dec 20 |
| 90% chance | Dec 9 |
Agricultural climatic data from weather station: CLATSKANIE (USC00351643)