Frost dates for Cedar City 5e, UT
At Cedar City 5e, the median last spring frost (32°F) is May 23 and the median first fall frost is Oct 4, for a typical growing season of 130 days. For a 90% chance that the last frost has passed, wait until Jun 8. Nearby ZIP codes are in USDA hardiness zones 6a to 7a.
- May 23Last spring frost (median)50% chance of 32°F after this date
- Jun 8Safer planting date10% chance of 32°F after this date
- Oct 4First fall frost (median)50% chance of 32°F by this date
- 130 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | May 20 | Jun 3 | Jun 17 |
| 32°F | May 5 | May 23 | Jun 8 |
| 28°F | Apr 21 | May 8 | May 27 |
| 24°F | Apr 5 | Apr 23 | May 14 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Sep 10 | Sep 25 | Oct 7 |
| 32°F | Sep 20 | Oct 4 | Oct 18 |
| 28°F | Sep 29 | Oct 13 | Oct 27 |
| 24°F | Oct 7 | Oct 24 | Nov 9 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 91 days | 110 days | 129 days |
| 32°F | 110 days | 130 days | 153 days |
| 28°F | 131 days | 155 days | 178 days |
| 24°F | 157 days | 181 days | 206 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 84772 | 6b | -5 to 0°F | 16 km |
| 84721 | 6b | -5 to 0°F | 18 km |
| 84719 | 6a | -10 to -5°F | 19 km |
| 84742 | 6b | -5 to 0°F | 21 km |
| 84761 | 6a | -10 to -5°F | 24 km |
| 84720 | 6b | -5 to 0°F | 27 km |
| 84762 | 6a | -10 to -5°F | 29 km |
| 84757 | 7a | 0 to 5°F | 32 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00421260, at 37.6564, -112.9917, elevation 1970 m (6,465 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 158.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Cedar City (8 km)
- Cedar City Muni Airport (11 km)
- Blowhard Mountain Radar (13 km)
- Brian Head (13 km)
- Cedar Breaks National Monument (15 km)
- New Harmony (34 km)
- Hatch (49 km)
- Zion National Park (50 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.