Waterville, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.8 °C (low) to 18.3 °C (high). Annual precipitation averages 832.1 Millimeters. Waterville 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 | -8.1 °C | 3.3 °C | 18.54 mm |
| February | -6.2 °C | 6 °C | 25.91 mm |
| March | -0.6 °C | 12.6 °C | 49.02 mm |
| April | 5.1 °C | 18.3 °C | 79.76 mm |
| May | 11.4 °C | 23.7 °C | 122.94 mm |
| June | 17.1 °C | 29.2 °C | 116.08 mm |
| July | 19.6 °C | 31.8 °C | 114.05 mm |
| August | 18.3 °C | 30.9 °C | 92.2 mm |
| September | 13.1 °C | 26.8 °C | 82.55 mm |
| October | 6.1 °C | 20 °C | 63.75 mm |
| November | -0.5 °C | 11.8 °C | 38.35 mm |
| December | -6 °C | 5.3 °C | 28.96 mm |
| Annual | 5.8 °C | 18.3 °C | 832.11 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |