Mound Valley, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8 °C (low) to 20 °C (high). Annual precipitation averages 1140.7 Millimeters. Mound Valley is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 6.4 °C | 39.12 mm |
| February | -3.2 °C | 9.3 °C | 44.96 mm |
| March | 1.9 °C | 14.7 °C | 75.95 mm |
| April | 7.4 °C | 19.8 °C | 118.11 mm |
| May | 13.3 °C | 24.4 °C | 178.82 mm |
| June | 18.6 °C | 29.4 °C | 140.72 mm |
| July | 20.9 °C | 32.3 °C | 106.68 mm |
| August | 19.8 °C | 32.1 °C | 104.65 mm |
| September | 15.1 °C | 27.7 °C | 111.51 mm |
| October | 8.2 °C | 21.3 °C | 100.33 mm |
| November | 1.9 °C | 14.3 °C | 67.06 mm |
| December | -3.2 °C | 8.2 °C | 52.83 mm |
| Annual | 8 °C | 20 °C | 1140.74 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |