The last 36°F Spring frost date is 30% likely to be on May 19. (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 Mosier, 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 30 |
| 20% chance | May 24 |
| 30% chance | May 19 |
| 40% chance | May 15 |
| 50% chance | May 12 |
| 60% chance | May 8 |
| 70% chance | May 4 |
| 80% chance | Apr 30 |
| 90% chance | Apr 26 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | May 11 |
| 20% chance | May 5 |
| 30% chance | Apr 30 |
| 40% chance | Apr 27 |
| 50% chance | Apr 24 |
| 60% chance | Apr 18 |
| 70% chance | Apr 12 |
| 80% chance | Apr 5 |
| 90% chance | Mar 30 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 21 |
| 20% chance | Apr 10 |
| 30% chance | Apr 1 |
| 40% chance | Mar 28 |
| 50% chance | Mar 23 |
| 60% chance | Mar 17 |
| 70% chance | Mar 11 |
| 80% chance | Mar 5 |
| 90% chance | Feb 25 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Mar 17 |
| 20% chance | Mar 6 |
| 30% chance | Mar 1 |
| 40% chance | Feb 26 |
| 50% chance | Feb 21 |
| 60% chance | Feb 16 |
| 70% chance | Feb 11 |
| 80% chance | Feb 3 |
| 90% chance | Jan 18 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 27 |
| 20% chance | Feb 20 |
| 30% chance | Feb 15 |
| 40% chance | Feb 9 |
| 50% chance | Feb 3 |
| 60% chance | Jan 28 |
| 70% chance | Jan 16 |
| 80% chance | Jan 6 |
| 90% chance | Dec 25 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 21 |
| 20% chance | Feb 14 |
| 30% chance | Feb 7 |
| 40% chance | Feb 1 |
| 50% chance | Jan 23 |
| 60% chance | Jan 13 |
| 70% chance | Jan 6 |
| 80% chance | Dec 31 |
| 90% chance | Dec 13 |
Agricultural climatic data from weather station: HOOD RIVER EXP STN (USC00354003)