Frost dates for Granite Peak Dugway Pg, UT
At Granite Peak Dugway Pg, the median last spring frost (32°F) is Apr 18 and the median first fall frost is Oct 16, for a typical growing season of 179 days. For a 90% chance that the last frost has passed, wait until May 5. Nearby ZIP codes are in USDA hardiness zones 6a to 7a.
- Apr 18Last spring frost (median)50% chance of 32°F after this date
- May 5Safer planting date10% chance of 32°F after this date
- Oct 16First fall frost (median)50% chance of 32°F by this date
- 179 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 1 | May 18 |
| 32°F | Apr 2 | Apr 18 | May 5 |
| 28°F | Mar 12 | Apr 1 | Apr 21 |
| 24°F | Feb 25 | Mar 13 | Apr 4 |
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 26 | Oct 6 | Oct 19 |
| 32°F | Oct 2 | Oct 16 | Oct 29 |
| 28°F | Oct 12 | Oct 26 | Nov 8 |
| 24°F | Oct 21 | Nov 4 | Nov 18 |
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 | 138 days | 156 days | 175 days |
| 32°F | 157 days | 179 days | 199 days |
| 28°F | 182 days | 205 days | 229 days |
| 24°F | 207 days | 231 days | 255 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 |
|---|---|---|---|
| 84034 | 6b | -5 to 0°F | 49 km |
| 84029 | 7a | 0 to 5°F | 57 km |
| 84022 | 6b | -5 to 0°F | 64 km |
| 84069 | 6a | -10 to -5°F | 77 km |
| 84080 | 6b | -5 to 0°F | 78 km |
| 84083 | 6b | -5 to 0°F | 80 km |
| 84071 | 6b | -5 to 0°F | 94 km |
| 84074 | 7a | 0 to 5°F | 100 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 USW00004134, at 40.1606, -113.3508, elevation 1311 m (4,300 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 131.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Fish Springs Nwr (36 km)
- Dugway (37 km)
- Callao (42 km)
- Ibapah (56 km)
- Johnson Pass (66 km)
- Partoun (75 km)
- Vernon (78 km)
- Wendover Airport Awos (85 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.