Chewey, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.2 °F (low) to 70.4 °F (high). Annual precipitation averages 48.1 Inches. Chewey 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 | 26.5 °F | 48.1 °F | 2.63 in. |
| February | 30.0 °F | 52.5 °F | 2.46 in. |
| March | 38.4 °F | 61.5 °F | 3.97 in. |
| April | 46.8 °F | 70.5 °F | 4.83 in. |
| May | 56.4 °F | 77.6 °F | 6.02 in. |
| June | 65.4 °F | 85.6 °F | 4.98 in. |
| July | 69.5 °F | 91.0 °F | 4.0 in. |
| August | 68.0 °F | 90.8 °F | 3.63 in. |
| September | 60.3 °F | 83.6 °F | 4.51 in. |
| October | 48.7 °F | 72.5 °F | 4.34 in. |
| November | 38.2 °F | 60.9 °F | 3.67 in. |
| December | 29.6 °F | 50.4 °F | 3.09 in. |
| Annual | 48.2 °F | 70.4 °F | 48.13 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |