Bell, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 55.6 °F (low) to 74.7 °F (high). Annual precipitation averages 14.2 Inches. Bell is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 47.4 °F | 67.9 °F | 3.29 in. |
| February | 48.7 °F | 67.8 °F | 3.64 in. |
| March | 51.1 °F | 69.0 °F | 2.29 in. |
| April | 53.2 °F | 72.2 °F | 0.75 in. |
| May | 57.2 °F | 74.0 °F | 0.28 in. |
| June | 60.7 °F | 77.2 °F | 0.08 in. |
| July | 64.0 °F | 82.3 °F | 0.05 in. |
| August | 64.6 °F | 84.0 °F | 0.01 in. |
| September | 63.2 °F | 83.1 °F | 0.12 in. |
| October | 58.7 °F | 79.0 °F | 0.52 in. |
| November | 51.9 °F | 72.9 °F | 0.79 in. |
| December | 46.9 °F | 67.4 °F | 2.35 in. |
| Annual | 55.6 °F | 74.7 °F | 14.17 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 10b : 35°F to 30°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |