The last 36°F Spring frost date is 30% likely to be on Apr 21. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 6. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for San Manuel, AZ are based on historical climate data.
Always check your local forecast for the most up-to-date frost warnings.
Book Recommendations (ads!)
📚 Growing Under Cover: Techniques for a More Productive, Weather-Resistant, Pest-Free Vegetable Garden
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 1 |
| 20% chance | Apr 25 |
| 30% chance | Apr 21 |
| 40% chance | Apr 17 |
| 50% chance | Apr 13 |
| 60% chance | Apr 10 |
| 70% chance | Apr 6 |
| 80% chance | Apr 2 |
| 90% chance | Mar 26 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 18 |
| 20% chance | Apr 11 |
| 30% chance | Apr 6 |
| 40% chance | Apr 1 |
| 50% chance | Mar 29 |
| 60% chance | Mar 24 |
| 70% chance | Mar 19 |
| 80% chance | Mar 14 |
| 90% chance | Mar 5 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 2 |
| 20% chance | Mar 24 |
| 30% chance | Mar 17 |
| 40% chance | Mar 11 |
| 50% chance | Mar 5 |
| 60% chance | Feb 27 |
| 70% chance | Feb 20 |
| 80% chance | Feb 11 |
| 90% chance | Jan 31 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Mar 12 |
| 20% chance | Mar 1 |
| 30% chance | Feb 19 |
| 40% chance | Feb 10 |
| 50% chance | Feb 4 |
| 60% chance | Jan 30 |
| 70% chance | Jan 20 |
| 80% chance | Jan 10 |
| 90% chance | Jan 1 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 23 |
| 20% chance | Feb 9 |
| 30% chance | Feb 1 |
| 40% chance | Jan 25 |
| 50% chance | Jan 14 |
| 60% chance | Jan 7 |
| 70% chance | Dec 31 |
| 80% chance | Dec 23 |
| 90% chance | Dec 14 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Feb 12 |
| 20% chance | Feb 1 |
| 30% chance | Jan 20 |
| 40% chance | Jan 11 |
| 50% chance | Jan 7 |
| 60% chance | Jan 3 |
| 70% chance | Dec 30 |
| 80% chance | Dec 24 |
| 90% chance | Dec 16 |
Agricultural climatic data from weather station: ORACLE 2 SE (USC00026119)