Frost dates for Doyle 4 SSE, CA
At Doyle 4 SSE, the median last spring frost (32°F) is May 21 and the median first fall frost is Oct 1, for a typical growing season of 130 days. For a 90% chance that the last frost has passed, wait until Jun 11. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- May 21Last spring frost (median)50% chance of 32°F after this date
- Jun 11Safer planting date10% chance of 32°F after this date
- Oct 1First fall frost (median)50% chance of 32°F by this date
- 130 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 | May 23 | Jun 10 | Jun 29 |
| 32°F | Apr 30 | May 21 | Jun 11 |
| 28°F | Apr 13 | May 2 | May 26 |
| 24°F | Mar 15 | Apr 12 | May 5 |
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 | Aug 28 | Sep 12 | Sep 30 |
| 32°F | Sep 9 | Oct 1 | Oct 19 |
| 28°F | Sep 29 | Oct 17 | Nov 4 |
| 24°F | Oct 13 | Nov 1 | Nov 15 |
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 | 64 days | 92 days | 118 days |
| 32°F | 104 days | 130 days | 159 days |
| 28°F | 135 days | 166 days | 192 days |
| 24°F | 171 days | 200 days | 228 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 96109 | 7a | 0 to 5°F | 3 km |
| 96135 | 6b | -5 to 0°F | 21 km |
| 96113 | 7a | 0 to 5°F | 25 km |
| 96121 | 7a | 0 to 5°F | 33 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 USC00042506, at 39.9717, -120.0828, elevation 1338 m (4,390 ft).
- Data quality: Representative (10+ years), 16 years of freeze data.
- Average days per year at or below 32°F: 140.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Portola (38 km)
- Verdi 2w (50 km)
- Sagehen Creek (62 km)
- Boca (65 km)
- Susanville 2sw (70 km)
- Truckee Ranger Station (71 km)
- Truckee-Tahoe Airport (73 km)
- Donner Mem State Park (73 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.