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Frost dates and growing zones in Utah
Towns covered so far in Utah fall in USDA zones 6a, 6b, 7a, 7b. Median dates mean frost comes later (spring) or earlier (fall) in half of years.
Towns
| Town | Zone | Median last frost | Median first frost |
|---|---|---|---|
| Salt Lake City | 7b | Apr 8 | Oct 31 |
| Provo | 7a | Apr 18 | Oct 21 |
| Lehi | 7a | Apr 17 | Oct 25 |
| Sandy | 7b | Apr 29 | Oct 22 |
| Ogden | 7a | Apr 21 | Oct 23 |
| Logan | 6a | May 8 | Oct 2 |
| Cedar City | 6b | May 4 | Oct 13 |