Kahlotus, Washington has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 4.6 °C (low) to 17.4 °C (high). Annual precipitation averages 278.1 Millimeters. 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 | -2.7 °C | 3.9 °C | 35.05 mm |
| February | -1.7 °C | 7.6 °C | 24.38 mm |
| March | 0.8 °C | 12.8 °C | 29.97 mm |
| April | 3.3 °C | 17.3 °C | 24.38 mm |
| May | 7.1 °C | 22.4 °C | 22.86 mm |
| June | 10.3 °C | 26.1 °C | 19.05 mm |
| July | 13.7 °C | 31.4 °C | 6.35 mm |
| August | 13.5 °C | 31 °C | 5.33 mm |
| September | 9.4 °C | 25.9 °C | 8.89 mm |
| October | 4.2 °C | 17.7 °C | 23.62 mm |
| November | 0 °C | 9.1 °C | 38.1 mm |
| December | -2.9 °C | 3.6 °C | 40.13 mm |
| Annual | 4.6 °C | 17.4 °C | 278.11 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |