Monterey Park, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 54.8 °F (low) to 77.9 °F (high). Annual precipitation averages 16.9 Inches. Monterey Park is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 46.7 °F | 68.9 °F | 3.96 in. |
| February | 47.6 °F | 68.9 °F | 4.35 in. |
| March | 49.9 °F | 70.9 °F | 2.88 in. |
| April | 52.4 °F | 76.2 °F | 0.89 in. |
| May | 56.4 °F | 78.0 °F | 0.39 in. |
| June | 59.9 °F | 82.2 °F | 0.12 in. |
| July | 63.4 °F | 87.0 °F | 0.04 in. |
| August | 64.1 °F | 89.3 °F | 0.02 in. |
| September | 62.6 °F | 88.1 °F | 0.14 in. |
| October | 57.7 °F | 82.4 °F | 0.6 in. |
| November | 50.7 °F | 74.6 °F | 0.81 in. |
| December | 45.8 °F | 68.2 °F | 2.74 in. |
| Annual | 54.8 °F | 77.9 °F | 16.94 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 35°F to 30°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |