Otis, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 19.8 °C (high). Annual precipitation averages 670.6 Millimeters. Otis is located in USDA Plant Hardiness Zone 6b. 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 | -7.4 °C | 5.9 °C | 17.53 mm |
| February | -5.8 °C | 8.3 °C | 24.13 mm |
| March | -0.7 °C | 14.1 °C | 38.61 mm |
| April | 4.3 °C | 19.1 °C | 54.36 mm |
| May | 10.7 °C | 24.6 °C | 108.97 mm |
| June | 16.7 °C | 30.7 °C | 90.42 mm |
| July | 19.3 °C | 33.4 °C | 101.09 mm |
| August | 18.1 °C | 32.2 °C | 91.95 mm |
| September | 13.6 °C | 28.1 °C | 48.77 mm |
| October | 5.9 °C | 21.1 °C | 46.74 mm |
| November | -1 °C | 13.3 °C | 24.38 mm |
| December | -6.2 °C | 6.7 °C | 23.62 mm |
| Annual | 5.6 °C | 19.8 °C | 670.57 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |