🌷 2026 Last Frost Dates for Ben Lomond, California 95005
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 4. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Ben Lomond, CA are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
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What is a Last Frost Date?
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!
How to use the Last Frost Date?
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.
Last Frost Date Probabilities
| Probability of frost (36°F) on or after… | |
|---|---|
| 10% chance | May 19 |
| 20% chance | May 11 |
| 30% chance | May 5 |
| 40% chance | Apr 30 |
| 50% chance | Apr 28 |
| 60% chance | Apr 23 |
| 70% chance | Apr 18 |
| 80% chance | Apr 13 |
| 90% chance | Apr 6 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 21 |
| 20% chance | Apr 12 |
| 30% chance | Apr 4 |
| 40% chance | Mar 31 |
| 50% chance | Mar 25 |
| 60% chance | Mar 17 |
| 70% chance | Mar 10 |
| 80% chance | Feb 28 |
| 90% chance | Feb 17 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Mar 9 |
| 20% chance | Feb 28 |
| 30% chance | Feb 22 |
| 40% chance | Feb 15 |
| 50% chance | Feb 6 |
| 60% chance | Jan 30 |
| 70% chance | Jan 22 |
| 80% chance | Jan 8 |
| 90% chance | Dec 26 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Feb 13 |
| 20% chance | Jan 31 |
| 30% chance | Jan 21 |
| 40% chance | Jan 13 |
| 50% chance | Jan 4 |
| 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 | Jan 14 |
| 20% chance | Jan 4 |
| 30% chance | Jan 2 |
| 40% chance | Dec 31 |
| 50% chance | Dec 30 |
| 60% chance | Dec 25 |
| 70% chance | Dec 20 |
| 80% chance | Dec 14 |
| 90% chance | Dec 8 |
| 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: BEN LOMOND #4 (USC00040673:frost)