California · 29 stations
California Frost Dates: 29 Weather Stations
29 NOAA weather stations in California with at least 25 years of frost records.
| Station | Zone | Last spring frost (50%) | First fall frost (50%) | Frost-free days |
|---|---|---|---|---|
| Auberry, CA | 9a | March 25 | December 3 | 253 |
| Big Bear Lake, CA | 7a | May 27 | October 4 | 131 |
| Bishop, CA | 7b | April 29 | October 15 | 166 |
| Calaveras Big Trees, CA | 8a | May 7 | October 28 | 169 |
| Campo, CA | 9a | April 30 | October 26 | 174 |
| Cherry Valley Dam, CA | 8a | May 2 | November 4 | 183 |
| Chester, CA | 7a | May 28 | September 28 | 124 |
| Graton, CA | 9a | March 20 | November 13 | 240 |
| King City, CA | 9a | February 23 | November 22 | 271 |
| Lee Vining, CA | 7a | May 23 | October 9 | 139 |
| Lodgepole, CA | 6b | June 8 | September 20 | 100 |
| Mount Hamilton, CA | 9a | May 3 | November 18 | 197 |
| Nevada City, CA | 9a | April 14 | November 20 | 218 |
| Paso Robles, CA | 9a | March 15 | November 10 | 238 |
| Paso Robles (Airport), CA | 9a | April 4 | November 5 | 213 |
| Portola, CA | 6b | June 11 | September 10 | 91 |
| Redding, CA | 9a | March 3 | November 21 | 261 |
| Sandberg, CA | 9a | April 15 | November 26 | 224 |
| Sonora, CA | 9a | April 9 | November 9 | 213 |
| Strawberry Valley, CA | 8b | May 4 | October 30 | 174 |
| Tahoe City, CA | 7a | June 9 | September 25 | 108 |
| near Aguanga, CA | 9a | April 29 | November 18 | 201 |
| near Barstow, CA | 9a | February 19 | November 26 | 279 |
| near Corcoran, CA | 9a | February 15 | November 27 | 285 |
| near Dunsmuir, CA | 8b | April 23 | October 27 | 185 |
| near Grass Valley, CA | 9a | April 10 | November 13 | 215 |
| near Greenville, CA | 7b | May 18 | October 8 | 143 |
| near Lewiston, CA | 8b | April 23 | October 22 | 178 |
| near Redwood Valley, CA | 9a | April 8 | November 6 | 211 |