Frost dates for Grant Grove, CA
At Grant Grove, the median last spring frost (32°F) is Jun 1 and the median first fall frost is Oct 7, for a typical growing season of 132 days. For a 90% chance that the last frost has passed, wait until Jun 15. Nearby ZIP codes are in USDA hardiness zones 7b to 9b.
- Jun 1Last spring frost (median)50% chance of 32°F after this date
- Jun 15Safer planting date10% chance of 32°F after this date
- Oct 7First fall frost (median)50% chance of 32°F by this date
- 132 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 26 | Jun 9 | Jun 22 |
| 32°F | May 11 | Jun 1 | Jun 15 |
| 28°F | Apr 25 | May 16 | Jun 6 |
| 24°F | Apr 9 | Apr 29 | May 25 |
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 | Sep 7 | Sep 25 | Oct 14 |
| 32°F | Sep 19 | Oct 7 | Oct 30 |
| 28°F | Oct 1 | Oct 21 | Nov 11 |
| 24°F | Oct 14 | Nov 6 | Nov 29 |
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 | 82 days | 108 days | 130 days |
| 32°F | 108 days | 132 days | 160 days |
| 28°F | 128 days | 158 days | 187 days |
| 24°F | 160 days | 190 days | 220 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 |
|---|---|---|---|
| 93633 | 7b | 5 to 10°F | 1 km |
| 93641 | 9a | 20 to 25°F | 8 km |
| 93628 | 7b | 5 to 10°F | 11 km |
| 93621 | 9a | 20 to 25°F | 12 km |
| 93675 | 9a | 20 to 25°F | 21 km |
| 93647 | 9b | 25 to 30°F | 24 km |
| 93646 | 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 USC00043551, at 36.7375, -118.9619, elevation 2006 m (6,580 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 137.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Balch Power House (22 km)
- Lodgepole (25 km)
- Ash Mountain (30 km)
- Three Rivers Edison Ph 1 (32 km)
- Lemon Cove (40 km)
- Visalia (55 km)
- Huntington Lake (59 km)
- Lindsay (60 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.