| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Jan. 1 - Jan. 10 |
| Average Last Frost Date: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 95459 - Manchester, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 41 | 42 | 42 | 46 | 48 | 50 | 50 | 49 | 45 | 41 | 38 | 44 |
| Avg Max Temp (°F) | 57 | 58 | 59 | 61 | 62 | 65 | 67 | 67 | 68 | 66 | 61 | 57 | 62 |
| Avg Precip (In.) | 7.68 | 6.74 | 6.3 | 2.91 | 1.13 | .27 | .14 | .32 | .72 | 2.33 | 5.7 | 6.53 | 40.76 |