Towanda, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.5 °C (low) to 19.9 °C (high). Annual precipitation averages 946.4 Millimeters. Towanda is located in USDA Plant Hardiness Zone 7a. 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 | -5.7 °C | 6.2 °C | 21.84 mm |
| February | -3.9 °C | 8.7 °C | 35.81 mm |
| March | 1.2 °C | 14.6 °C | 62.48 mm |
| April | 6.7 °C | 19.8 °C | 85.34 mm |
| May | 12.8 °C | 24.4 °C | 145.8 mm |
| June | 18.3 °C | 29.8 °C | 137.92 mm |
| July | 20.6 °C | 32.4 °C | 109.47 mm |
| August | 19.6 °C | 31.8 °C | 105.92 mm |
| September | 15 °C | 28.1 °C | 86.11 mm |
| October | 7.9 °C | 21.4 °C | 77.98 mm |
| November | 1.1 °C | 13.8 °C | 44.45 mm |
| December | -4.2 °C | 7.3 °C | 33.27 mm |
| Annual | 7.5 °C | 19.9 °C | 946.39 mm |
| 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 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |