Covina, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 53.6 °F (low) to 78.8 °F (high). Annual precipitation averages 17.2 Inches. Covina is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 45.8 °F | 68.9 °F | 3.9 in. |
| February | 46.5 °F | 69.2 °F | 4.52 in. |
| March | 48.5 °F | 71.7 °F | 2.69 in. |
| April | 50.7 °F | 75.1 °F | 0.81 in. |
| May | 55.0 °F | 78.3 °F | 0.42 in. |
| June | 58.6 °F | 83.6 °F | 0.13 in. |
| July | 62.4 °F | 90.3 °F | 0.08 in. |
| August | 63.0 °F | 92.2 °F | 0.01 in. |
| September | 61.4 °F | 89.7 °F | 0.13 in. |
| October | 56.6 °F | 82.8 °F | 0.85 in. |
| November | 50.0 °F | 75.1 °F | 0.92 in. |
| December | 45.0 °F | 68.1 °F | 2.75 in. |
| Annual | 53.6 °F | 78.8 °F | 17.21 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 | Csa - Hot-Summer Mediterranean Climate |