The last 36°F Spring frost date is 30% likely to be on Mar 23. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Feb 18. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Winters, 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 | Apr 6 |
| 20% chance | Mar 30 |
| 30% chance | Mar 23 |
| 40% chance | Mar 17 |
| 50% chance | Mar 11 |
| 60% chance | Mar 4 |
| 70% chance | Feb 27 |
| 80% chance | Feb 20 |
| 90% chance | Feb 10 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Mar 7 |
| 20% chance | Feb 26 |
| 30% chance | Feb 18 |
| 40% chance | Feb 11 |
| 50% chance | Feb 5 |
| 60% chance | Jan 31 |
| 70% chance | Jan 28 |
| 80% chance | Jan 20 |
| 90% chance | Jan 6 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Feb 9 |
| 20% chance | Jan 31 |
| 30% chance | Jan 26 |
| 40% chance | Jan 19 |
| 50% chance | Jan 13 |
| 60% chance | Jan 7 |
| 70% chance | Jan 1 |
| 80% chance | Dec 28 |
| 90% chance | Dec 18 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Jan 29 |
| 20% chance | Jan 19 |
| 30% chance | Jan 11 |
| 40% chance | Jan 6 |
| 50% chance | Jan 2 |
| 60% chance | Dec 31 |
| 70% chance | Dec 27 |
| 80% chance | Dec 20 |
| 90% chance | Dec 13 |
| Probability of hard freeze (20°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 |
| 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: WINTERS (USC00049742)