Bradley, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 44.1 °F (low) to 79 °F (high). Annual precipitation averages 12.3 Inches. Bradley is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.7 °F | 62.5 °F | 2.87 in. |
| February | 37.7 °F | 64.7 °F | 2.76 in. |
| March | 39.9 °F | 68.8 °F | 2.23 in. |
| April | 41.5 °F | 75.3 °F | 0.8 in. |
| May | 46.4 °F | 82.9 °F | 0.25 in. |
| June | 50.4 °F | 90.5 °F | 0.03 in. |
| July | 54.2 °F | 96.4 °F | 0.07 in. |
| August | 54.2 °F | 97.4 °F | 0.0 in. |
| September | 51.0 °F | 93.3 °F | 0.05 in. |
| October | 44.8 °F | 83.6 °F | 0.51 in. |
| November | 38.5 °F | 70.1 °F | 0.87 in. |
| December | 34.6 °F | 61.9 °F | 1.85 in. |
| Annual | 44.1 °F | 79 °F | 12.29 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |