| 2023 Hardiness Zone: | Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 10a: 30F to 35F |
| Average First Frost Date: | No Frost |
| Average Last Frost Date: | Frost Rare |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 93483 - Grover Beach, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 42 | 44 | 45 | 46 | 47 | 50 | 52 | 53 | 53 | 50 | 46 | 42 | 48 |
| Avg Max Temp (°F) | 64 | 65 | 66 | 68 | 68 | 70 | 71 | 72 | 73 | 72 | 68 | 65 | 68 |
| Avg Precip (In.) | 3.44 | 3.53 | 3.23 | 1.05 | .37 | .06 | .03 | .02 | .31 | .69 | 1.55 | 2.47 | 16.76 |