The last 36°F Spring frost date is 30% likely to be on May 18. (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 Dunsmuir, CA 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 23 |
| 30% chance | May 18 |
| 40% chance | May 14 |
| 50% chance | May 11 |
| 60% chance | May 8 |
| 70% chance | May 4 |
| 80% chance | May 1 |
| 90% chance | Apr 27 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | May 9 |
| 20% chance | May 3 |
| 30% chance | Apr 30 |
| 40% chance | Apr 27 |
| 50% chance | Apr 24 |
| 60% chance | Apr 21 |
| 70% chance | Apr 17 |
| 80% chance | Apr 12 |
| 90% chance | Apr 5 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 22 |
| 20% chance | Apr 16 |
| 30% chance | Apr 11 |
| 40% chance | Apr 7 |
| 50% chance | Apr 3 |
| 60% chance | Mar 30 |
| 70% chance | Mar 25 |
| 80% chance | Mar 17 |
| 90% chance | Mar 5 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Apr 3 |
| 20% chance | Mar 23 |
| 30% chance | Mar 10 |
| 40% chance | Mar 2 |
| 50% chance | Feb 24 |
| 60% chance | Feb 17 |
| 70% chance | Feb 9 |
| 80% chance | Feb 2 |
| 90% chance | Jan 19 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 24 |
| 20% chance | Feb 15 |
| 30% chance | Feb 7 |
| 40% chance | Jan 31 |
| 50% chance | Jan 23 |
| 60% chance | Jan 12 |
| 70% chance | Jan 4 |
| 80% chance | Dec 28 |
| 90% chance | Dec 16 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 16 |
| 20% chance | Feb 2 |
| 30% chance | Jan 27 |
| 40% chance | Jan 15 |
| 50% chance | Jan 4 |
| 60% chance | Dec 31 |
| 70% chance | Dec 26 |
| 80% chance | Dec 20 |
| 90% chance | Dec 12 |
Agricultural climatic data from weather station: DUNSMUIR TRTMNT PLT (USC00042574)