Tonyville, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 49.8 °F (low) to 77.2 °F (high). Annual precipitation averages 11.8 Inches. Tonyville is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.8 °F | 56.9 °F | 2.25 in. |
| February | 40.4 °F | 62.6 °F | 1.99 in. |
| March | 43.8 °F | 68.7 °F | 2.0 in. |
| April | 47.0 °F | 74.6 °F | 1.2 in. |
| May | 53.5 °F | 83.0 °F | 0.48 in. |
| June | 59.3 °F | 91.4 °F | 0.11 in. |
| July | 64.9 °F | 97.3 °F | 0.01 in. |
| August | 63.2 °F | 96.5 °F | 0.01 in. |
| September | 58.5 °F | 91.5 °F | 0.1 in. |
| October | 50.3 °F | 80.2 °F | 0.53 in. |
| November | 41.7 °F | 66.6 °F | 1.09 in. |
| December | 36.6 °F | 57.0 °F | 2.01 in. |
| Annual | 49.8 °F | 77.2 °F | 11.78 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 20-30 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 | BSk - Cold Semi-Arid Climate |