The last 36°F Spring frost date is 30% likely to be on May 21. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 30. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Dorena, OR 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 | Jun 2 |
| 20% chance | May 27 |
| 30% chance | May 21 |
| 40% chance | May 16 |
| 50% chance | May 12 |
| 60% chance | May 8 |
| 70% chance | May 4 |
| 80% chance | Apr 30 |
| 90% chance | Apr 25 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | May 12 |
| 20% chance | May 5 |
| 30% chance | Apr 30 |
| 40% chance | Apr 26 |
| 50% chance | Apr 20 |
| 60% chance | Apr 15 |
| 70% chance | Apr 8 |
| 80% chance | Apr 1 |
| 90% chance | Mar 25 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 16 |
| 20% chance | Apr 4 |
| 30% chance | Mar 28 |
| 40% chance | Mar 21 |
| 50% chance | Mar 14 |
| 60% chance | Mar 6 |
| 70% chance | Feb 28 |
| 80% chance | Feb 21 |
| 90% chance | Feb 10 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Mar 5 |
| 20% chance | Feb 27 |
| 30% chance | Feb 21 |
| 40% chance | Feb 16 |
| 50% chance | Feb 10 |
| 60% chance | Feb 3 |
| 70% chance | Jan 29 |
| 80% chance | Jan 15 |
| 90% chance | Dec 30 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 22 |
| 20% chance | Feb 16 |
| 30% chance | Feb 10 |
| 40% chance | Feb 4 |
| 50% chance | Jan 31 |
| 60% chance | Jan 18 |
| 70% chance | Jan 4 |
| 80% chance | Dec 28 |
| 90% chance | Dec 15 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 18 |
| 20% chance | Feb 11 |
| 30% chance | Feb 4 |
| 40% chance | Jan 30 |
| 50% chance | Jan 1 |
| 60% chance | Dec 29 |
| 70% chance | Dec 24 |
| 80% chance | Dec 18 |
| 90% chance | Dec 11 |
Agricultural climatic data from weather station: DORENA (USC00352374)