Tecumseh, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.6 °F (low) to 65.7 °F (high). Annual precipitation averages 37.4 Inches. Tecumseh is located in USDA Plant Hardiness Zone 6b. 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 | 19.6 °F | 38.9 °F | 0.88 in. |
| February | 23.5 °F | 43.9 °F | 1.32 in. |
| March | 33.2 °F | 55.4 °F | 2.27 in. |
| April | 43.7 °F | 66.1 °F | 3.91 in. |
| May | 55.0 °F | 75.4 °F | 5.35 in. |
| June | 65.1 °F | 84.8 °F | 5.11 in. |
| July | 69.0 °F | 89.3 °F | 4.18 in. |
| August | 66.8 °F | 88.1 °F | 4.43 in. |
| September | 57.6 °F | 80.5 °F | 3.6 in. |
| October | 45.1 °F | 68.5 °F | 2.87 in. |
| November | 33.4 °F | 54.5 °F | 1.92 in. |
| December | 23.6 °F | 42.4 °F | 1.58 in. |
| Annual | 44.6 °F | 65.7 °F | 37.42 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 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 |