Banning, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 10 °C (low) to 25.8 °C (high). Annual precipitation averages 396 Millimeters. 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 | 5.3 °C | 17.6 °C | 80.77 mm |
| February | 4.9 °C | 17.9 °C | 97.03 mm |
| March | 6.1 °C | 20.4 °C | 63.75 mm |
| April | 7.4 °C | 23.2 °C | 25.91 mm |
| May | 10.2 °C | 26.7 °C | 14.73 mm |
| June | 13.1 °C | 31.7 °C | 2.29 mm |
| July | 16.6 °C | 35.7 °C | 5.08 mm |
| August | 17.2 °C | 35.9 °C | 3.3 mm |
| September | 15.2 °C | 33.4 °C | 6.35 mm |
| October | 11.4 °C | 27.6 °C | 17.27 mm |
| November | 7.7 °C | 21.9 °C | 25.15 mm |
| December | 4.9 °C | 17.2 °C | 54.36 mm |
| Annual | 10 °C | 25.8 °C | 395.99 mm |
| 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 : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |