Frost dates for Bullhead City, AZ
At Bullhead City, the median last spring frost (32°F) is Jan 4 and the median first fall frost is Dec 23, for a typical growing season of 356 days. For a 90% chance that the last frost has passed, wait until Feb 5. Nearby ZIP codes are in USDA hardiness zones 9a to 10a.
- Jan 4Last spring frost (median)50% chance of 32°F after this date
- Feb 5Safer planting date10% chance of 32°F after this date
- Dec 23First fall frost (median)50% chance of 32°F by this date
- 356 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 | Dec 31 | Feb 1 | Feb 28 |
| 32°F | Dec 12 | Jan 4 | Feb 5 |
| 28°F | Dec 7 | Dec 26 | Jan 10 |
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 | Nov 24 | Dec 11 | Jan 2 |
| 32°F | Dec 1 | Dec 23 | Jan 23 |
| 28°F | Dec 7 | Dec 25 | Jan 8 |
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 | 281 days | 317 days | 348 days |
| 32°F | 323 days | 356 days | 365 days |
| 28°F | 356 days | 365 days | 365 days |
| 24°F | 365 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 97% |
| 32°F | 67% |
| 28°F | 18% |
| 24°F | 2% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 86442 | 10a | 30 to 35°F | 6 km |
| 89029 | 9b | 25 to 30°F | 8 km |
| 86426 | 9b | 25 to 30°F | 14 km |
| 86413 | 9a | 20 to 25°F | 29 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 USC00021050, at 35.1411, -114.5686, elevation 162 m (531 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 2.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Yucca 1 NNE (49 km)
- Kingman Mohave Co Airport (59 km)
- Lake Havasu City (73 km)
- Willow Beach (81 km)
- Wikieup (100 km)
- Temple Bar (101 km)
- Meadview 1w (108 km)
- Diamond M Rch (111 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.