| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Dec. 11 - Dec. 20 |
| Average Last Frost Date: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95220 - Acampo, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 43 | 46 | 50 | 55 | 57 | 57 | 55 | 49 | 41 | 37 | 47 |
| Avg Max Temp (°F) | 54 | 62 | 67 | 73 | 81 | 87 | 91 | 90 | 87 | 79 | 64 | 55 | 74 |
| Avg Precip (In.) | 3.6 | 3.25 | 3 | 1.23 | .59 | .13 | .07 | .06 | .34 | .97 | 2.28 | 2.65 | 18.17 |