Winona, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.3 °C (low) to 19.2 °C (high). Annual precipitation averages 491.5 Millimeters. Winona is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.6 °C | 6.1 °C | 7.87 mm |
| February | -7.4 °C | 7.9 °C | 11.43 mm |
| March | -3.2 °C | 13.6 °C | 23.11 mm |
| April | 1.6 °C | 18.2 °C | 40.13 mm |
| May | 7.9 °C | 23.7 °C | 68.83 mm |
| June | 13.9 °C | 30 °C | 71.63 mm |
| July | 16.9 °C | 32.9 °C | 90.93 mm |
| August | 15.9 °C | 31.5 °C | 73.41 mm |
| September | 10.8 °C | 27.3 °C | 39.12 mm |
| October | 3.2 °C | 19.9 °C | 36.32 mm |
| November | -3.4 °C | 12.3 °C | 14.99 mm |
| December | -7.9 °C | 6.6 °C | 13.72 mm |
| Annual | 3.3 °C | 19.2 °C | 491.49 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |