Butler, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.3 °C (low) to 22.5 °C (high). Annual precipitation averages 720.9 Millimeters. Butler is located in USDA Plant Hardiness Zone 7a. 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 | -4 °C | 9.9 °C | 22.35 mm |
| February | -2.4 °C | 11.9 °C | 27.94 mm |
| March | 2.3 °C | 17.2 °C | 53.09 mm |
| April | 7.1 °C | 22.1 °C | 70.1 mm |
| May | 13.1 °C | 26.9 °C | 104.39 mm |
| June | 18.6 °C | 31.9 °C | 94.23 mm |
| July | 20.9 °C | 35 °C | 56.9 mm |
| August | 20.2 °C | 34.5 °C | 84.84 mm |
| September | 15.8 °C | 30.1 °C | 68.07 mm |
| October | 8.7 °C | 23.3 °C | 67.31 mm |
| November | 2 °C | 16.3 °C | 38.61 mm |
| December | -3 °C | 10.3 °C | 33.02 mm |
| Annual | 8.3 °C | 22.5 °C | 720.85 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |