Oketo, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 17.9 °C (high). Annual precipitation averages 829.3 Millimeters. Oketo 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | 2.7 °C | 18.03 mm |
| February | -6.6 °C | 5.3 °C | 25.65 mm |
| March | -1 °C | 12.1 °C | 52.07 mm |
| April | 4.5 °C | 17.9 °C | 78.99 mm |
| May | 11 °C | 23.5 °C | 121.92 mm |
| June | 16.8 °C | 29 °C | 117.35 mm |
| July | 19.1 °C | 31.6 °C | 112.01 mm |
| August | 17.7 °C | 30.7 °C | 89.66 mm |
| September | 12.4 °C | 26.6 °C | 85.09 mm |
| October | 5.4 °C | 19.7 °C | 62.23 mm |
| November | -1.2 °C | 11.4 °C | 37.85 mm |
| December | -6.4 °C | 4.7 °C | 28.45 mm |
| Annual | 5.3 °C | 17.9 °C | 829.3 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |