Frost dates for Los Gatos, CA
At Los Gatos, the median last spring frost (32°F) is Feb 2 and the median first fall frost is Dec 6, for a typical growing season of 310 days. For a 90% chance that the last frost has passed, wait until Mar 14. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 2Last spring frost (median)50% chance of 32°F after this date
- Mar 14Safer planting date10% chance of 32°F after this date
- Dec 6First fall frost (median)50% chance of 32°F by this date
- 310 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 16 | Mar 20 | Apr 16 |
| 32°F | Dec 31 | Feb 2 | Mar 14 |
| 28°F | Dec 9 | Jan 1 | Jan 26 |
| 24°F | Dec 1 | Dec 30 | Jan 11 |
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 4 | Nov 20 | Dec 5 |
| 32°F | Nov 16 | Dec 6 | Jan 7 |
| 28°F | Nov 28 | Dec 19 | Jan 13 |
| 24°F | Dec 1 | Dec 27 | 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 | 208 days | 241 days | 280 days |
| 32°F | 263 days | 310 days | 346 days |
| 28°F | 327 days | 356 days | 365 days |
| 24°F | 364 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 97% |
| 28°F | 58% |
| 24°F | 12% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 95030 | 9b | 25 to 30°F | 2 km |
| 95124 | 9b | 25 to 30°F | 4 km |
| 95008 | 9b | 25 to 30°F | 5 km |
| 95130 | 9b | 25 to 30°F | 6 km |
| 95118 | 9b | 25 to 30°F | 7 km |
| 95032 | 9b | 25 to 30°F | 8 km |
| 95033 | 9b | 25 to 30°F | 8 km |
| 95070 | 9b | 25 to 30°F | 9 km |
| 95123 | 9b | 25 to 30°F | 11 km |
| 95120 | 9b | 25 to 30°F | 12 km |
| 95119 | 9b | 25 to 30°F | 15 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 USC00045123, at 37.2319, -121.9592, elevation 111 m (365 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 13.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- San Jose (14 km)
- San Jose (14 km)
- Ben Lomond #4 (19 km)
- Moffett Federal Airfield (21 km)
- Skyline Ridge Preserve (22 km)
- Santa Cruz (27 km)
- Palo Alto (28 km)
- Mount Hamilton (31 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.