Easton, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 50 °F (low) to 76.8 °F (high). Annual precipitation averages 11.4 Inches. Easton is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.2 °F | 56.2 °F | 2.43 in. |
| February | 40.7 °F | 62.1 °F | 2.08 in. |
| March | 44.0 °F | 68.2 °F | 1.93 in. |
| April | 47.2 °F | 74.3 °F | 0.97 in. |
| May | 53.7 °F | 82.7 °F | 0.46 in. |
| June | 59.3 °F | 91.1 °F | 0.14 in. |
| July | 64.7 °F | 97.3 °F | 0.03 in. |
| August | 63.4 °F | 96.5 °F | 0.0 in. |
| September | 58.9 °F | 91.0 °F | 0.1 in. |
| October | 51.0 °F | 80.0 °F | 0.47 in. |
| November | 42.2 °F | 66.3 °F | 0.93 in. |
| December | 36.9 °F | 56.3 °F | 1.84 in. |
| Annual | 50 °F | 76.8 °F | 11.38 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| 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 | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |