Frost dates for Jerome, AZ
At Jerome, the median last spring frost (32°F) is Mar 26 and the median first fall frost is Nov 25, for a typical growing season of 242 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Mar 26Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Nov 25First fall frost (median)50% chance of 32°F by this date
- 242 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 | Mar 21 | Apr 13 | May 5 |
| 32°F | Feb 28 | Mar 26 | Apr 19 |
| 28°F | Jan 27 | Mar 1 | Apr 4 |
| 24°F | Dec 27 | Jan 31 | Mar 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 | Oct 24 | Nov 12 | Nov 29 |
| 32°F | Nov 4 | Nov 25 | Dec 10 |
| 28°F | Nov 17 | Dec 6 | Dec 26 |
| 24°F | Nov 26 | Dec 21 | Jan 24 |
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 | 185 days | 212 days | 237 days |
| 32°F | 211 days | 242 days | 275 days |
| 28°F | 241 days | 277 days | 318 days |
| 24°F | 278 days | 322 days | 359 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 93% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 86331 | 8b | 15 to 20°F | 1 km |
| 86324 | 8b | 15 to 20°F | 8 km |
| 86327 | 8a | 10 to 15°F | 22 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 USC00024453, at 34.7522, -112.1114, elevation 1509 m (4,950 ft).
- Data quality: Standard (24+ years of data), 25 years of freeze data.
- Average days per year at or below 32°F: 36.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Tuzigoot (8 km)
- Montezuma Castle National Monument (30 km)
- Prescott Love Field (30 km)
- Chino Valley (32 km)
- Sedona (35 km)
- Prescott (36 km)
- Oak Creek Canyon (40 km)
- Mund's Park (48 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.