Tonganoxie, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.1 °F (low) to 64.9 °F (high). Annual precipitation averages 39.3 Inches. Tonganoxie is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.0 °F | 38.3 °F | 1.14 in. |
| February | 22.9 °F | 43.3 °F | 1.49 in. |
| March | 32.6 °F | 54.9 °F | 2.37 in. |
| April | 43.1 °F | 65.2 °F | 3.95 in. |
| May | 54.2 °F | 74.6 °F | 5.17 in. |
| June | 64.3 °F | 84.2 °F | 5.3 in. |
| July | 68.3 °F | 88.7 °F | 4.34 in. |
| August | 66.3 °F | 87.3 °F | 4.48 in. |
| September | 57.3 °F | 79.6 °F | 4.05 in. |
| October | 45.0 °F | 67.4 °F | 3.25 in. |
| November | 32.9 °F | 53.9 °F | 2.1 in. |
| December | 23.1 °F | 41.9 °F | 1.62 in. |
| Annual | 44.1 °F | 64.9 °F | 39.26 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |