Cleone, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 45.8 °F (low) to 60.9 °F (high). Annual precipitation averages 41.3 Inches. Cleone is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.6 °F | 55.5 °F | 7.27 in. |
| February | 42.5 °F | 55.9 °F | 6.31 in. |
| March | 42.9 °F | 57.0 °F | 6.16 in. |
| April | 43.8 °F | 59.4 °F | 3.31 in. |
| May | 46.2 °F | 61.5 °F | 1.61 in. |
| June | 48.4 °F | 64.3 °F | 0.69 in. |
| July | 49.6 °F | 65.3 °F | 0.1 in. |
| August | 50.2 °F | 66.2 °F | 0.12 in. |
| September | 49.5 °F | 66.6 °F | 0.29 in. |
| October | 47.5 °F | 64.3 °F | 2.33 in. |
| November | 44.8 °F | 58.6 °F | 4.49 in. |
| December | 42.0 °F | 56.0 °F | 8.63 in. |
| Annual | 45.8 °F | 60.9 °F | 41.31 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |