Frost dates for Three Rivers Edison Ph 1, CA
At Three Rivers Edison Ph 1, the median last spring frost (32°F) is Mar 16 and the median first fall frost is Nov 26, for a typical growing season of 249 days. For a 90% chance that the last frost has passed, wait until Apr 14. Nearby ZIP codes are in USDA hardiness zone 9b.
- Mar 16Last spring frost (median)50% chance of 32°F after this date
- Apr 14Safer planting date10% chance of 32°F after this date
- Nov 26First fall frost (median)50% chance of 32°F by this date
- 249 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 4 |
| 32°F | Feb 5 | Mar 16 | Apr 14 |
| 28°F | Dec 24 | Jan 30 | Mar 18 |
| 24°F | Dec 9 | Jan 3 | Feb 7 |
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 21 | Nov 10 | Nov 25 |
| 32°F | Nov 5 | Nov 26 | Dec 12 |
| 28°F | Nov 22 | Dec 11 | Jan 11 |
| 24°F | Dec 1 | Dec 26 | Jan 30 |
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 | 180 days | 209 days | 236 days |
| 32°F | 216 days | 249 days | 294 days |
| 28°F | 265 days | 317 days | 353 days |
| 24°F | 333 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 96% |
| 24°F | 43% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 93271 | 9b | 25 to 30°F | 3 km |
| 93237 | 9b | 25 to 30°F | 4 km |
| 93265 | 9b | 25 to 30°F | 31 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 USC00048917, at 36.4650, -118.8619, elevation 348 m (1,140 ft).
- Data quality: Representative (10+ years), 26 years of freeze data.
- Average days per year at or below 32°F: 30.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Ash Mountain (4 km)
- Lemon Cove (17 km)
- Lodgepole (19 km)
- Grant Grove (32 km)
- Lindsay (34 km)
- Visalia (42 km)
- Porterville (46 km)
- Balch Power House (53 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.