Terra Bella, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 50.4 °F (low) to 77.5 °F (high). Annual precipitation averages 10.1 Inches. Terra Bella is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.4 °F | 57.7 °F | 2.06 in. |
| February | 40.9 °F | 63.0 °F | 1.77 in. |
| March | 44.3 °F | 69.1 °F | 1.68 in. |
| April | 47.3 °F | 74.6 °F | 0.97 in. |
| May | 53.6 °F | 83.3 °F | 0.39 in. |
| June | 59.6 °F | 91.9 °F | 0.11 in. |
| July | 65.6 °F | 97.2 °F | 0.03 in. |
| August | 64.3 °F | 96.3 °F | 0.03 in. |
| September | 59.7 °F | 91.5 °F | 0.08 in. |
| October | 51.3 °F | 80.5 °F | 0.48 in. |
| November | 42.5 °F | 67.0 °F | 0.88 in. |
| December | 37.2 °F | 57.6 °F | 1.63 in. |
| Annual | 50.4 °F | 77.5 °F | 10.11 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 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 | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |