The last 36°F Spring frost date is 30% likely to be on May 5. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 12. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Hammond, 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 14 |
| 20% chance | May 8 |
| 30% chance | May 5 |
| 40% chance | May 2 |
| 50% chance | Apr 30 |
| 60% chance | Apr 27 |
| 70% chance | Apr 23 |
| 80% chance | Apr 19 |
| 90% chance | Apr 12 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 26 |
| 20% chance | Apr 18 |
| 30% chance | Apr 12 |
| 40% chance | Apr 6 |
| 50% chance | Apr 1 |
| 60% chance | Mar 28 |
| 70% chance | Mar 22 |
| 80% chance | Mar 15 |
| 90% chance | Mar 3 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Mar 21 |
| 20% chance | Mar 11 |
| 30% chance | Mar 2 |
| 40% chance | Feb 25 |
| 50% chance | Feb 20 |
| 60% chance | Feb 15 |
| 70% chance | Feb 7 |
| 80% chance | Jan 28 |
| 90% chance | Jan 7 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Feb 23 |
| 20% chance | Feb 16 |
| 30% chance | Feb 9 |
| 40% chance | Feb 2 |
| 50% chance | Jan 24 |
| 60% chance | Jan 13 |
| 70% chance | Jan 3 |
| 80% chance | Dec 28 |
| 90% chance | Dec 14 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 14 |
| 20% chance | Feb 2 |
| 30% chance | Jan 21 |
| 40% chance | Jan 11 |
| 50% chance | Jan 4 |
| 60% chance | Dec 31 |
| 70% chance | Dec 26 |
| 80% chance | Dec 19 |
| 90% chance | Dec 12 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 7 |
| 20% chance | Jan 23 |
| 30% chance | Jan 8 |
| 40% chance | Jan 2 |
| 50% chance | Dec 31 |
| 60% chance | Dec 25 |
| 70% chance | Dec 20 |
| 80% chance | Dec 16 |
| 90% chance | Dec 12 |
Agricultural climatic data from weather station: ASTORIA RGNL AP (USW00094224)