Wathena, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.7 °F (low) to 64.6 °F (high). Annual precipitation averages 36.6 Inches. Wathena is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.1 °F | 36.8 °F | 0.96 in. |
| February | 21.0 °F | 41.9 °F | 1.31 in. |
| March | 31.4 °F | 54.4 °F | 2.23 in. |
| April | 41.9 °F | 65.4 °F | 3.7 in. |
| May | 53.7 °F | 75.3 °F | 4.94 in. |
| June | 63.7 °F | 84.3 °F | 4.96 in. |
| July | 67.3 °F | 87.8 °F | 4.76 in. |
| August | 64.7 °F | 86.4 °F | 3.9 in. |
| September | 55.9 °F | 80.0 °F | 3.4 in. |
| October | 43.1 °F | 67.7 °F | 3.06 in. |
| November | 31.7 °F | 54.0 °F | 1.92 in. |
| December | 21.4 °F | 41.0 °F | 1.5 in. |
| Annual | 42.7 °F | 64.6 °F | 36.64 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |