Empire, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 48.7 °F (low) to 74.3 °F (high). Annual precipitation averages 13.7 Inches. Empire 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. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.4 °F | 55.1 °F | 2.92 in. |
| February | 40.8 °F | 60.9 °F | 2.35 in. |
| March | 43.6 °F | 66.4 °F | 2.18 in. |
| April | 46.5 °F | 71.7 °F | 1.08 in. |
| May | 51.8 °F | 80.0 °F | 0.65 in. |
| June | 56.8 °F | 87.5 °F | 0.14 in. |
| July | 60.5 °F | 92.6 °F | 0.0 in. |
| August | 59.5 °F | 91.4 °F | 0.02 in. |
| September | 56.5 °F | 87.5 °F | 0.06 in. |
| October | 50.0 °F | 78.1 °F | 0.67 in. |
| November | 42.3 °F | 65.1 °F | 1.19 in. |
| December | 37.8 °F | 55.6 °F | 2.39 in. |
| Annual | 48.7 °F | 74.3 °F | 13.65 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| 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 |