Frost dates for Buttonwillow, CA
At Buttonwillow, the median last spring frost (32°F) is Feb 9 and the median first fall frost is Nov 26, for a typical growing season of 289 days. For a 90% chance that the last frost has passed, wait until Mar 6. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 9Last spring frost (median)50% chance of 32°F after this date
- Mar 6Safer planting date10% chance of 32°F after this date
- Nov 26First fall frost (median)50% chance of 32°F by this date
- 289 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 | Feb 10 | Mar 7 | Apr 6 |
| 32°F | Jan 10 | Feb 9 | Mar 6 |
| 28°F | Dec 16 | Jan 11 | Feb 8 |
| 24°F | Dec 10 | Dec 30 | Jan 19 |
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 29 | Nov 13 | Nov 26 |
| 32°F | Nov 10 | Nov 26 | Dec 12 |
| 28°F | Nov 22 | Dec 8 | Jan 2 |
| 24°F | Dec 1 | Dec 17 | Jan 5 |
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 | 217 days | 248 days | 278 days |
| 32°F | 259 days | 289 days | 322 days |
| 28°F | 303 days | 333 days | 362 days |
| 24°F | 337 days | 364 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 92% |
| 24°F | 47% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 93206 | 9a | 20 to 25°F | 5 km |
| 93276 | 9b | 25 to 30°F | 11 km |
| 93251 | 9b | 25 to 30°F | 21 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 USC00041244, at 35.4028, -119.4700, elevation 69 m (225 ft).
- Data quality: Representative (10+ years), 25 years of freeze data.
- Average days per year at or below 32°F: 24.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Wasco (23 km)
- Taft (28 km)
- Shafter 6e (31 km)
- Bakersfield Airport (38 km)
- Bakersfield 5 NW (38 km)
- Delano (45 km)
- New Cuyama Fire Station (54 km)
- Corcoran Irrig Dist (78 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.