| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 10a: 30°F to 35°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: | No Frost | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 92606 - Irvine, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 45 | 47 | 48 | 51 | 55 | 59 | 62 | 63 | 61 | 56 | 49 | 44 | 53 |
| Avg Max Temp (°F) | 67 | 68 | 68 | 71 | 73 | 76 | 81 | 82 | 81 | 77 | 72 | 67 | 74 |
| Avg Precip (In.) | 2.82 | 2.9 | 2.59 | .69 | .25 | .09 | .02 | .12 | .32 | .37 | 1.14 | 1.7 | 13 |