Del Monte Forest, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 48.6 °F (low) to 64.3 °F (high). Annual precipitation averages 18.7 Inches. Del Monte Forest is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 45.1 °F | 60.3 °F | 4.06 in. |
| February | 45.0 °F | 60.6 °F | 3.66 in. |
| March | 45.0 °F | 61.7 °F | 2.84 in. |
| April | 46.0 °F | 62.0 °F | 1.34 in. |
| May | 48.9 °F | 63.8 °F | 0.53 in. |
| June | 51.1 °F | 65.9 °F | 0.14 in. |
| July | 53.3 °F | 66.8 °F | 0.05 in. |
| August | 54.0 °F | 67.8 °F | 0.05 in. |
| September | 53.1 °F | 69.3 °F | 0.08 in. |
| October | 50.3 °F | 68.8 °F | 0.77 in. |
| November | 47.1 °F | 64.6 °F | 1.7 in. |
| December | 44.3 °F | 60.1 °F | 3.48 in. |
| Annual | 48.6 °F | 64.3 °F | 18.7 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |