Hiawatha, 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 17.9 °C (high). Annual precipitation averages 892.8 Millimeters. Hiawatha 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 | -8.5 °C | 2.3 °C | 19.05 mm |
| February | -6.4 °C | 5.4 °C | 30.48 mm |
| March | -0.9 °C | 12.2 °C | 53.59 mm |
| April | 5.1 °C | 18.2 °C | 93.47 mm |
| May | 11.8 °C | 23.7 °C | 119.89 mm |
| June | 17.3 °C | 28.8 °C | 122.17 mm |
| July | 19.5 °C | 31 °C | 124.71 mm |
| August | 18.2 °C | 30.2 °C | 96.27 mm |
| September | 12.9 °C | 26.3 °C | 88.65 mm |
| October | 6.2 °C | 19.8 °C | 70.1 mm |
| November | -0.6 °C | 11.6 °C | 44.96 mm |
| December | -5.6 °C | 4.8 °C | 29.46 mm |
| Annual | 5.8 °C | 17.9 °C | 892.8 mm |
| 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 : -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 |