| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 95960 - North San Juan, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 37 | 39 | 42 | 47 | 53 | 57 | 56 | 52 | 46 | 38 | 34 | 45 |
| Avg Max Temp (°F) | 56 | 59 | 62 | 68 | 77 | 86 | 93 | 92 | 87 | 77 | 63 | 56 | 73 |
| Avg Precip (In.) | 7.94 | 7.1 | 6.63 | 2.9 | 1.55 | .54 | .13 | .18 | .83 | 2.43 | 6.1 | 6.38 | 42.7 |