Tuolumne City, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 6.9 °C (low) to 21.9 °C (high). Annual precipitation averages 992.1 Millimeters. Tuolumne City is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1 °C | 12.8 °C | 187.96 mm |
| February | 1.4 °C | 13.6 °C | 166.37 mm |
| March | 2.8 °C | 16 °C | 150.62 mm |
| April | 4.3 °C | 18.3 °C | 88.39 mm |
| May | 7.6 °C | 23.3 °C | 52.07 mm |
| June | 11.2 °C | 28.9 °C | 14.48 mm |
| July | 15.3 °C | 33.6 °C | 2.03 mm |
| August | 14.7 °C | 33.2 °C | 3.3 mm |
| September | 12.2 °C | 30.2 °C | 5.84 mm |
| October | 7.6 °C | 23.9 °C | 50.8 mm |
| November | 3.3 °C | 16.9 °C | 93.73 mm |
| December | 0.8 °C | 12.4 °C | 176.53 mm |
| Annual | 6.9 °C | 21.9 °C | 992.12 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |