Frost dates for Paria Ranger Station, UT
At Paria Ranger Station, the median last spring frost (32°F) is Apr 19 and the median first fall frost is Oct 23, for a typical growing season of 186 days. For a 90% chance that the last frost has passed, wait until May 9. Nearby ZIP codes are in USDA hardiness zones 6a to 7b.
- Apr 19Last spring frost (median)50% chance of 32°F after this date
- May 9Safer planting date10% chance of 32°F after this date
- Oct 23First fall frost (median)50% chance of 32°F by this date
- 186 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 | Apr 17 | May 2 | May 22 |
| 32°F | Apr 1 | Apr 19 | May 9 |
| 28°F | Mar 17 | Apr 3 | Apr 21 |
| 24°F | Mar 1 | Mar 17 | Apr 6 |
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 30 | Oct 14 | Oct 28 |
| 32°F | Oct 9 | Oct 23 | Nov 6 |
| 28°F | Oct 19 | Nov 2 | Nov 14 |
| 24°F | Oct 29 | Nov 12 | Nov 22 |
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 | 135 days | 161 days | 184 days |
| 32°F | 162 days | 186 days | 208 days |
| 28°F | 188 days | 212 days | 232 days |
| 24°F | 212 days | 237 days | 258 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 |
|---|---|---|---|
| 84741 | 7a | 0 to 5°F | 32 km |
| 86036 | 7b | 5 to 10°F | 36 km |
| 84718 | 6a | -10 to -5°F | 55 km |
| 84776 | 6a | -10 to -5°F | 61 km |
| 84736 | 6b | -5 to 0°F | 63 km |
| 86040 | 7b | 5 to 10°F | 67 km |
| 84710 | 6a | -10 to -5°F | 68 km |
| 86022 | 7a | 0 to 5°F | 69 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 USC00426640, at 37.1044, -111.9000, elevation 1349 m (4,426 ft).
- Data quality: Representative (10+ years), 15 years of freeze data.
- Average days per year at or below 32°F: 125.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Big Water (21 km)
- Kodachrome Basin Park (46 km)
- Kanab (57 km)
- Alton (64 km)
- Bryce Canyon National Park Hqrs (64 km)
- Orderville (68 km)
- Bryce Canyon Airport (70 km)
- Hatch (77 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.