Fort Jones, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 36.3 °F (low) to 67.1 °F (high). Annual precipitation averages 21.8 Inches. Fort Jones is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.5 °F | 46.3 °F | 3.98 in. |
| February | 28.0 °F | 51.9 °F | 2.97 in. |
| March | 30.3 °F | 57.2 °F | 2.29 in. |
| April | 33.4 °F | 63.2 °F | 1.56 in. |
| May | 39.3 °F | 72.6 °F | 1.06 in. |
| June | 43.8 °F | 80.9 °F | 0.68 in. |
| July | 50.1 °F | 90.6 °F | 0.42 in. |
| August | 48.6 °F | 90.1 °F | 0.4 in. |
| September | 43.9 °F | 83.5 °F | 0.31 in. |
| October | 35.6 °F | 70.3 °F | 1.27 in. |
| November | 29.0 °F | 54.1 °F | 2.56 in. |
| December | 26.5 °F | 44.3 °F | 4.26 in. |
| Annual | 36.3 °F | 67.1 °F | 21.76 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |