The last 36°F Spring frost date is 30% likely to be on May 12. (See detailed probabilities below.)
The last 32°F light freeze date is 30% likely to be on Apr 29. (See detailed probabilities below.)
(See also 🍂 First Fall Frost Dates.)
Last frost date probabilities for West Valley City, UT 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 23 |
| 20% chance | May 17 |
| 30% chance | May 12 |
| 40% chance | May 8 |
| 50% chance | May 4 |
| 60% chance | May 2 |
| 70% chance | Apr 29 |
| 80% chance | Apr 25 |
| 90% chance | Apr 20 |
| Probability of light freeze (32°F) on or after… | |
|---|---|
| 10% chance | May 9 |
| 20% chance | May 3 |
| 30% chance | Apr 29 |
| 40% chance | Apr 25 |
| 50% chance | Apr 21 |
| 60% chance | Apr 17 |
| 70% chance | Apr 12 |
| 80% chance | Apr 7 |
| 90% chance | Mar 31 |
| Probability of moderate freeze (28°F) on or after… | |
|---|---|
| 10% chance | Apr 24 |
| 20% chance | Apr 16 |
| 30% chance | Apr 11 |
| 40% chance | Apr 6 |
| 50% chance | Apr 1 |
| 60% chance | Mar 29 |
| 70% chance | Mar 23 |
| 80% chance | Mar 17 |
| 90% chance | Mar 10 |
| Probability of moderate hard freeze (24°F) on or after… | |
|---|---|
| 10% chance | Apr 5 |
| 20% chance | Mar 28 |
| 30% chance | Mar 21 |
| 40% chance | Mar 16 |
| 50% chance | Mar 11 |
| 60% chance | Mar 8 |
| 70% chance | Mar 4 |
| 80% chance | Feb 28 |
| 90% chance | Feb 21 |
| Probability of hard freeze (20°F) on or after… | |
|---|---|
| 10% chance | Mar 15 |
| 20% chance | Mar 9 |
| 30% chance | Mar 4 |
| 40% chance | Mar 1 |
| 50% chance | Feb 26 |
| 60% chance | Feb 22 |
| 70% chance | Feb 18 |
| 80% chance | Feb 13 |
| 90% chance | Feb 7 |
| Probability of severe hard freeze (16°F) on or after… | |
|---|---|
| 10% chance | Mar 4 |
| 20% chance | Feb 28 |
| 30% chance | Feb 23 |
| 40% chance | Feb 19 |
| 50% chance | Feb 15 |
| 60% chance | Feb 11 |
| 70% chance | Feb 7 |
| 80% chance | Feb 3 |
| 90% chance | Jan 27 |
Agricultural climatic data from weather station: SALT LAKE CITY INTL AP (USW00024127)