Wallace, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 37.8 °F (low) to 67.4 °F (high). Annual precipitation averages 19.1 Inches. Wallace is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.1 °F | 44.1 °F | 0.34 in. |
| February | 18.5 °F | 47.1 °F | 0.49 in. |
| March | 26.2 °F | 57.1 °F | 0.89 in. |
| April | 34.8 °F | 65.9 °F | 1.63 in. |
| May | 46.2 °F | 75.3 °F | 2.68 in. |
| June | 57.2 °F | 86.8 °F | 2.65 in. |
| July | 62.8 °F | 92.2 °F | 3.52 in. |
| August | 60.6 °F | 89.6 °F | 2.94 in. |
| September | 51.3 °F | 82.3 °F | 1.51 in. |
| October | 37.0 °F | 69.0 °F | 1.4 in. |
| November | 25.3 °F | 55.0 °F | 0.54 in. |
| December | 17.2 °F | 44.9 °F | 0.51 in. |
| Annual | 37.8 °F | 67.4 °F | 19.1 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |