Kahlotus, Washington has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 40.2 °F (low) to 63.3 °F (high). Annual precipitation averages 11 Inches. Kahlotus is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.1 °F | 39.0 °F | 1.38 in. |
| February | 29.0 °F | 45.7 °F | 0.96 in. |
| March | 33.4 °F | 55.1 °F | 1.18 in. |
| April | 37.9 °F | 63.1 °F | 0.96 in. |
| May | 44.8 °F | 72.3 °F | 0.9 in. |
| June | 50.5 °F | 78.9 °F | 0.75 in. |
| July | 56.6 °F | 88.5 °F | 0.25 in. |
| August | 56.3 °F | 87.8 °F | 0.21 in. |
| September | 48.9 °F | 78.6 °F | 0.35 in. |
| October | 39.5 °F | 63.8 °F | 0.93 in. |
| November | 32.0 °F | 48.4 °F | 1.5 in. |
| December | 26.8 °F | 38.4 °F | 1.58 in. |
| Annual | 40.2 °F | 63.3 °F | 10.95 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |