Wann, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.4 °F (low) to 69.1 °F (high). Annual precipitation averages 41.2 Inches. Wann 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 | 22.8 °F | 45.2 °F | 1.49 in. |
| February | 26.2 °F | 49.7 °F | 1.83 in. |
| March | 35.2 °F | 59.5 °F | 3.13 in. |
| April | 45.5 °F | 68.8 °F | 4.34 in. |
| May | 56.1 °F | 76.8 °F | 6.38 in. |
| June | 65.6 °F | 85.7 °F | 5.38 in. |
| July | 69.7 °F | 91.1 °F | 3.6 in. |
| August | 67.6 °F | 90.7 °F | 3.66 in. |
| September | 59.2 °F | 83.3 °F | 3.38 in. |
| October | 46.8 °F | 71.6 °F | 3.76 in. |
| November | 35.7 °F | 59.1 °F | 2.29 in. |
| December | 26.1 °F | 47.6 °F | 1.96 in. |
| Annual | 46.4 °F | 69.1 °F | 41.2 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 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |