The last 36°F Spring frost date is 30% likely to be on May 8. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 14. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Warrenton, OR are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
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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 27 |
| 20% chance | May 14 |
| 30% chance | May 8 |
| 40% chance | May 4 |
| 50% chance | May 1 |
| 60% chance | Apr 29 |
| 70% chance | Apr 26 |
| 80% chance | Apr 22 |
| 90% chance | Apr 16 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 26 |
| 20% chance | Apr 19 |
| 30% chance | Apr 14 |
| 40% chance | Apr 9 |
| 50% chance | Apr 3 |
| 60% chance | Mar 30 |
| 70% chance | Mar 24 |
| 80% chance | Mar 16 |
| 90% chance | Feb 28 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Mar 17 |
| 20% chance | Mar 5 |
| 30% chance | Feb 27 |
| 40% chance | Feb 21 |
| 50% chance | Feb 16 |
| 60% chance | Feb 8 |
| 70% chance | Feb 1 |
| 80% chance | Jan 22 |
| 90% chance | Jan 3 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Feb 20 |
| 20% chance | Feb 12 |
| 30% chance | Feb 4 |
| 40% chance | Jan 31 |
| 50% chance | Jan 23 |
| 60% chance | Jan 13 |
| 70% chance | Jan 5 |
| 80% chance | Dec 29 |
| 90% chance | Dec 11 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 11 |
| 20% chance | Feb 1 |
| 30% chance | Jan 23 |
| 40% chance | Jan 14 |
| 50% chance | Jan 6 |
| 60% chance | Jan 1 |
| 70% chance | Dec 28 |
| 80% chance | Dec 22 |
| 90% chance | Dec 12 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | rarely |
| 20% chance | rarely |
| 30% chance | rarely |
| 40% chance | rarely |
| 50% chance | rarely |
| 60% chance | rarely |
| 70% chance | rarely |
| 80% chance | rarely |
| 90% chance | rarely |
Agricultural climatic data from weather station: FT CLATSOP NATL MEM (USC00353014)