The last 36°F Spring frost date is 30% likely to be on Apr 5. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Mar 15. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for Sonoita, AZ 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 20 |
| 20% chance | Apr 12 |
| 30% chance | Apr 5 |
| 40% chance | Mar 31 |
| 50% chance | Mar 27 |
| 60% chance | Mar 22 |
| 70% chance | Mar 17 |
| 80% chance | Mar 10 |
| 90% chance | Feb 27 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | Apr 2 |
| 20% chance | Mar 23 |
| 30% chance | Mar 15 |
| 40% chance | Mar 8 |
| 50% chance | Mar 1 |
| 60% chance | Feb 23 |
| 70% chance | Feb 14 |
| 80% chance | Feb 5 |
| 90% chance | Jan 26 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Mar 4 |
| 20% chance | Feb 20 |
| 30% chance | Feb 9 |
| 40% chance | Feb 3 |
| 50% chance | Jan 29 |
| 60% chance | Jan 21 |
| 70% chance | Jan 12 |
| 80% chance | Jan 5 |
| 90% chance | Dec 25 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Feb 7 |
| 20% chance | Feb 1 |
| 30% chance | Jan 26 |
| 40% chance | Jan 15 |
| 50% chance | Jan 8 |
| 60% chance | Jan 3 |
| 70% chance | Dec 30 |
| 80% chance | Dec 24 |
| 90% chance | Dec 14 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Feb 1 |
| 20% chance | Jan 20 |
| 30% chance | Jan 11 |
| 40% chance | Jan 8 |
| 50% chance | Jan 5 |
| 60% chance | Jan 1 |
| 70% chance | Dec 29 |
| 80% chance | Dec 24 |
| 90% chance | Dec 17 |
| 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: SANTA RITA EXP RANGE (USC00027593)