Tuolumne City, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 44.3 °F (low) to 71.5 °F (high). Annual precipitation averages 39.1 Inches. 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 | 33.8 °F | 55.0 °F | 7.4 in. |
| February | 34.6 °F | 56.4 °F | 6.55 in. |
| March | 37.1 °F | 60.8 °F | 5.93 in. |
| April | 39.7 °F | 65.0 °F | 3.48 in. |
| May | 45.6 °F | 73.9 °F | 2.05 in. |
| June | 52.2 °F | 84.0 °F | 0.57 in. |
| July | 59.5 °F | 92.4 °F | 0.08 in. |
| August | 58.4 °F | 91.8 °F | 0.13 in. |
| September | 53.9 °F | 86.3 °F | 0.23 in. |
| October | 45.7 °F | 75.0 °F | 2.0 in. |
| November | 38.0 °F | 62.5 °F | 3.69 in. |
| December | 33.4 °F | 54.4 °F | 6.95 in. |
| Annual | 44.3 °F | 71.5 °F | 39.06 in. |
| 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 : 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 |