Banning, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 50 °F (low) to 78.4 °F (high). Annual precipitation averages 15.6 Inches. Banning is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 41.5 °F | 63.7 °F | 3.18 in. |
| February | 40.9 °F | 64.2 °F | 3.82 in. |
| March | 42.9 °F | 68.7 °F | 2.51 in. |
| April | 45.3 °F | 73.7 °F | 1.02 in. |
| May | 50.3 °F | 80.1 °F | 0.58 in. |
| June | 55.6 °F | 89.1 °F | 0.09 in. |
| July | 61.9 °F | 96.2 °F | 0.2 in. |
| August | 62.9 °F | 96.6 °F | 0.13 in. |
| September | 59.4 °F | 92.2 °F | 0.25 in. |
| October | 52.6 °F | 81.7 °F | 0.68 in. |
| November | 45.9 °F | 71.4 °F | 0.99 in. |
| December | 40.8 °F | 63.0 °F | 2.14 in. |
| Annual | 50 °F | 78.4 °F | 15.59 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |