| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°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: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 93402 - Los Osos, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 42 | 44 | 44 | 45 | 47 | 50 | 52 | 53 | 52 | 50 | 46 | 42 | 47 |
| Avg Max Temp (°F) | 63 | 63 | 64 | 66 | 67 | 68 | 70 | 71 | 72 | 70 | 68 | 63 | 67 |
| Avg Precip (In.) | 3.3 | 3.54 | 3.5 | 1.12 | .34 | .07 | .03 | .08 | .34 | .71 | 1.5 | 2.31 | 16.84 |