The last 36°F Spring frost date is 30% likely to be on May 6. (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 Carnation, WA 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 15 |
| 20% chance | May 9 |
| 30% chance | May 6 |
| 40% chance | May 3 |
| 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 27 |
| 20% chance | Apr 20 |
| 30% chance | Apr 14 |
| 40% chance | Apr 10 |
| 50% chance | Apr 5 |
| 60% chance | Apr 1 |
| 70% chance | Mar 27 |
| 80% chance | Mar 22 |
| 90% chance | Mar 14 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Mar 31 |
| 20% chance | Mar 22 |
| 30% chance | Mar 15 |
| 40% chance | Mar 8 |
| 50% chance | Mar 2 |
| 60% chance | Feb 26 |
| 70% chance | Feb 20 |
| 80% chance | Feb 13 |
| 90% chance | Jan 31 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Mar 2 |
| 20% chance | Feb 25 |
| 30% chance | Feb 18 |
| 40% chance | Feb 11 |
| 50% chance | Feb 4 |
| 60% chance | Jan 27 |
| 70% chance | Jan 16 |
| 80% chance | Jan 5 |
| 90% chance | Dec 25 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 24 |
| 20% chance | Feb 14 |
| 30% chance | Feb 4 |
| 40% chance | Jan 23 |
| 50% chance | Jan 12 |
| 60% chance | Jan 4 |
| 70% chance | Dec 31 |
| 80% chance | Dec 24 |
| 90% chance | Dec 11 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 12 |
| 20% chance | Jan 29 |
| 30% chance | Jan 14 |
| 40% chance | Jan 5 |
| 50% chance | Jan 1 |
| 60% chance | Dec 30 |
| 70% chance | Dec 26 |
| 80% chance | Dec 22 |
| 90% chance | Dec 8 |
Agricultural climatic data from weather station: SNOQUALMIE FALLS (USC00457773)