Frost dates in Marin County, California
The average last spring frost in Marin County falls Dec 30 (prior Dec) to Feb 28 and the average first fall frost Nov 25 to Jan 2 (next year), depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 10a to 9b. Places: Bloomfield, Bolinas, Corte Madera, Dillon Beach, Fairfax, Inverness. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 94901 | San Rafael | Jan 11 | Dec 21 | 10a |
| 94903 | San Rafael | Jan 11 | Dec 21 | 9b |
| 94904 | Kentfield | Jan 16 | Dec 18 | 9b |
| 94920 | Tiburon | Jan 4 | Jan 2 (next year) | 10a |
| 94924 | Bolinas | Jan 16 | Dec 18 | 10a |
| 94925 | Corte Madera | Jan 16 | Dec 18 | 10a |
| 94929 | Dillon Beach | Jan 1 | Dec 31 | 10a |
| 94930 | Fairfax | Jan 16 | Dec 18 | 10a |
| 94933 | Lagunitas-Forest Knolls | Jan 11 | Dec 21 | 10a |
| 94937 | Jan 1 | Dec 31 | 10a | |
| 94938 | Lagunitas-Forest Knolls | Jan 11 | Dec 21 | 9b |
| 94939 | Larkspur | Jan 16 | Dec 18 | 10a |
| 94940 | Jan 1 | Dec 31 | 9b | |
| 94941 | Mill Valley | Jan 16 | Dec 18 | 10a |
| 94945 | Novato | Jan 11 | Dec 21 | 9b |
| 94946 | Nicasio | Jan 11 | Dec 21 | 9b |
| 94947 | Novato | Jan 11 | Dec 21 | 9b |
| 94949 | Novato | Jan 11 | Dec 21 | 9b |
| 94950 | Jan 11 | Dec 21 | 9b | |
| 94952 | Bloomfield | Feb 28 | Nov 25 | 9b |
| 94956 | Inverness | Jan 11 | Dec 21 | 9b |
| 94957 | Ross | Jan 16 | Dec 18 | 9b |
| 94960 | Sleepy Hollow | Jan 11 | Dec 21 | 9b |
| 94963 | San Geronimo | Jan 11 | Dec 21 | 9b |
| 94964 | Jan 16 | Dec 18 | 10a | |
| 94965 | Sausalito | Dec 30 (prior Dec) | Dec 25 | 10a |
| 94970 | Stinson Beach | Jan 16 | Dec 18 | 10a |
| 94971 | Dillon Beach | Jan 1 | Dec 31 | 9b |
| 94973 | Woodacre | Jan 11 | Dec 21 | 10a |
Nearby counties
San Francisco County Napa County Sonoma County Contra Costa County Alameda County Solano County
All California counties · Download California frost dates (CSV)
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