Hatton, Washington has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.7 °C (low) to 17 °C (high). Annual precipitation averages 231.6 Millimeters. Hatton is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.4 °C | 3.2 °C | 29.72 mm |
| February | -2.2 °C | 7.1 °C | 21.08 mm |
| March | 0 °C | 12.4 °C | 24.38 mm |
| April | 2.4 °C | 17.1 °C | 20.07 mm |
| May | 6.3 °C | 22.2 °C | 19.56 mm |
| June | 9.4 °C | 25.9 °C | 16.76 mm |
| July | 12.7 °C | 31.1 °C | 6.6 mm |
| August | 12.4 °C | 30.7 °C | 5.33 mm |
| September | 8.4 °C | 25.6 °C | 7.87 mm |
| October | 3.4 °C | 17.3 °C | 20.83 mm |
| November | -0.8 °C | 8.6 °C | 28.7 mm |
| December | -3.7 °C | 2.8 °C | 30.73 mm |
| Annual | 3.7 °C | 17 °C | 231.63 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |