Americus, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.8 °C (low) to 19.1 °C (high). Annual precipitation averages 926.1 Millimeters. Americus 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 | -6.8 °C | 4.8 °C | 21.59 mm |
| February | -4.8 °C | 7.6 °C | 34.29 mm |
| March | 0.5 °C | 13.7 °C | 60.71 mm |
| April | 6.1 °C | 19.1 °C | 88.14 mm |
| May | 12.4 °C | 24 °C | 134.11 mm |
| June | 17.8 °C | 29.3 °C | 122.43 mm |
| July | 20.2 °C | 32.1 °C | 117.09 mm |
| August | 19.1 °C | 31.6 °C | 100.58 mm |
| September | 14.3 °C | 27.1 °C | 89.41 mm |
| October | 7.1 °C | 20.6 °C | 71.88 mm |
| November | 0.8 °C | 13.2 °C | 49.02 mm |
| December | -4.6 °C | 6.6 °C | 36.83 mm |
| Annual | 6.8 °C | 19.1 °C | 926.08 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |