Beaumont, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 49.1 °F (low) to 77.6 °F (high). Annual precipitation averages 17.6 Inches. Beaumont 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 | 41.1 °F | 63.2 °F | 3.54 in. |
| February | 40.1 °F | 63.7 °F | 4.37 in. |
| March | 41.7 °F | 67.7 °F | 2.84 in. |
| April | 44.3 °F | 72.6 °F | 1.1 in. |
| May | 48.6 °F | 78.9 °F | 0.63 in. |
| June | 53.9 °F | 87.9 °F | 0.13 in. |
| July | 61.3 °F | 95.3 °F | 0.26 in. |
| August | 61.8 °F | 95.7 °F | 0.13 in. |
| September | 58.6 °F | 91.2 °F | 0.27 in. |
| October | 52.0 °F | 81.1 °F | 0.83 in. |
| November | 44.8 °F | 71.2 °F | 1.1 in. |
| December | 40.5 °F | 62.7 °F | 2.37 in. |
| Annual | 49.1 °F | 77.6 °F | 17.57 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 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |