Tonyville, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9.9 °C (low) to 25.1 °C (high). Annual precipitation averages 299.2 Millimeters. 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 | 3.2 °C | 13.8 °C | 57.15 mm |
| February | 4.7 °C | 17 °C | 50.55 mm |
| March | 6.6 °C | 20.4 °C | 50.8 mm |
| April | 8.3 °C | 23.7 °C | 30.48 mm |
| May | 11.9 °C | 28.3 °C | 12.19 mm |
| June | 15.2 °C | 33 °C | 2.79 mm |
| July | 18.3 °C | 36.3 °C | 0.25 mm |
| August | 17.3 °C | 35.8 °C | 0.25 mm |
| September | 14.7 °C | 33.1 °C | 2.54 mm |
| October | 10.2 °C | 26.8 °C | 13.46 mm |
| November | 5.4 °C | 19.2 °C | 27.69 mm |
| December | 2.6 °C | 13.9 °C | 51.05 mm |
| Annual | 9.9 °C | 25.1 °C | 299.2 mm |
| 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 : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |