State frost hub
First and last frost dates in California
Below are the average last spring frost and first fall frost for supported cities in California, each tied to its representative frost station and USDA zone. These are planning estimates from NOAA climate normals; verify locally before planting high-value crops.
| City | ZIP | Last frost | First frost | Frost-free days | Station | Zone |
|---|---|---|---|---|---|---|
| Los Angeles | 90012 | Jan 20 | Dec 15 | 329 | los-angeles-civic-center | 10b |
| Long Beach | 90802 | Jan 20 | Dec 15 | 329 | long-beach-airport | 10b |
| San Diego | 92101 | Jan 30 | Dec 15 | 319 | san-diego-lindbergh | 10b |
| Anaheim | 92805 | Jan 20 | Dec 15 | 329 | anaheim-fullerton | 10b |
| Bakersfield | 93301 | Feb 20 | Nov 25 | 278 | bakersfield-meadows | 9b |
| Fresno | 93721 | Feb 20 | Nov 25 | 278 | fresno-yosemite | 9b |
| San Francisco | 94102 | Jan 25 | Dec 15 | 324 | san-francisco-downtown | 10a |
| Oakland | 94612 | Feb 1 | Dec 1 | 303 | oakland-intl | 10a |
| San Jose | 95113 | Feb 15 | Dec 1 | 289 | san-jose-mineta | 9b |
| Sacramento | 95814 | Feb 20 | Nov 25 | 278 | sacramento-executive | 9b |