Deconstruct SunUtah Hardiness Zones
Utah covers USDA plant hardiness zones 4b to 8b on the 2023 map, so its coldest areas average −25 to −20 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.
Utah hardiness zone map
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.
Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.
Zones and daylight by city
| City | Zone | Coldest night | Longest day | Shortest day |
|---|---|---|---|---|
| Salt Lake City | 7b | 5 to 10 °F | 15h 06m | 9h 15m |
| West Valley City | 7b | 5 to 10 °F | 15h 06m | 9h 15m |
| Provo | 7a | 0 to 5 °F | 15h 03m | 9h 18m |
| West Jordan | 7b | 5 to 10 °F | 15h 05m | 9h 16m |
| Orem | 7a | 0 to 5 °F | 15h 03m | 9h 18m |
| St. George | 8b | 15 to 20 °F | 14h 43m | 9h 37m |
| Ogden | 7a | 0 to 5 °F | 15h 09m | 9h 12m |
| Logan | 6a | −10 to −5 °F | 15h 13m | 9h 09m |
| Park City | 5b | −15 to −10 °F | 15h 05m | 9h 16m |
Gardening in Utah?
Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.
Questions
What hardiness zones are in Utah?
Utah spans USDA zones 4b to 8b on the 2023 map. Among its larger cities, Park City is coldest (zone 5b) and St. George is warmest (zone 8b).
How do I find my exact zone in Utah?
Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.
How much sun do gardens in Utah get?
In Salt Lake City, an open spot gets up to 15.1 hours of daylight in June but only 9.2 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.