Belden, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 40.4 °F (low) to 69.9 °F (high). Annual precipitation averages 51.2 Inches. Belden is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.3 °F | 50.6 °F | 9.25 in. |
| February | 32.2 °F | 54.7 °F | 7.92 in. |
| March | 35.1 °F | 59.8 °F | 7.98 in. |
| April | 37.5 °F | 65.5 °F | 4.17 in. |
| May | 43.3 °F | 74.5 °F | 2.67 in. |
| June | 48.6 °F | 84.3 °F | 0.9 in. |
| July | 53.3 °F | 92.4 °F | 0.1 in. |
| August | 51.8 °F | 91.7 °F | 0.15 in. |
| September | 46.8 °F | 85.9 °F | 0.35 in. |
| October | 39.1 °F | 72.4 °F | 2.4 in. |
| November | 34.8 °F | 58.3 °F | 4.98 in. |
| December | 30.7 °F | 49.1 °F | 10.37 in. |
| Annual | 40.4 °F | 69.9 °F | 51.24 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |