Almena, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.7 °C (low) to 18.9 °C (high). Annual precipitation averages 611.9 Millimeters. Almena is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.3 °C | 4.3 °C | 12.19 mm |
| February | -7.8 °C | 6.6 °C | 17.78 mm |
| March | -2.8 °C | 13.1 °C | 34.29 mm |
| April | 2.5 °C | 18.4 °C | 58.67 mm |
| May | 8.9 °C | 23.7 °C | 96.01 mm |
| June | 15.1 °C | 30.2 °C | 81.53 mm |
| July | 18.1 °C | 33.1 °C | 94.74 mm |
| August | 16.7 °C | 31.6 °C | 79.76 mm |
| September | 11.4 °C | 27.5 °C | 46.99 mm |
| October | 3.6 °C | 20.2 °C | 48.77 mm |
| November | -3.3 °C | 12.2 °C | 23.11 mm |
| December | -8.3 °C | 5.4 °C | 18.03 mm |
| Annual | 3.7 °C | 18.9 °C | 611.87 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |