Chouteau, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 21.5 °C (high). Annual precipitation averages 1131.8 Millimeters. Chouteau 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 | -3.6 °C | 8.8 °C | 51.82 mm |
| February | -1.7 °C | 11.4 °C | 54.86 mm |
| March | 3.1 °C | 16.5 °C | 91.69 mm |
| April | 8.1 °C | 21.4 °C | 115.32 mm |
| May | 13.9 °C | 25.6 °C | 152.91 mm |
| June | 19 °C | 30.2 °C | 121.16 mm |
| July | 21.3 °C | 33.2 °C | 101.09 mm |
| August | 20.3 °C | 33.2 °C | 89.66 mm |
| September | 15.7 °C | 28.9 °C | 105.92 mm |
| October | 9.2 °C | 22.8 °C | 99.82 mm |
| November | 3 °C | 16.2 °C | 81.79 mm |
| December | -1.8 °C | 10.2 °C | 65.79 mm |
| Annual | 8.9 °C | 21.5 °C | 1131.83 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |