| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F |
| 2012 Hardiness Zone: | 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: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 92856 - Orange, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 44 | 46 | 47 | 50 | 54 | 58 | 61 | 62 | 60 | 55 | 48 | 43 | 52 |
| Avg Max Temp (°F) | 68 | 69 | 70 | 74 | 75 | 80 | 85 | 86 | 85 | 80 | 74 | 69 | 76 |
| Avg Precip (In.) | 3.18 | 3.08 | 2.72 | .73 | .25 | .11 | .02 | .12 | .32 | .38 | 1.15 | 1.78 | 13.84 |