Avant, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48 °F (low) to 71.2 °F (high). Annual precipitation averages 41 Inches. Avant 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 | 25.1 °F | 47.9 °F | 1.62 in. |
| February | 28.7 °F | 52.8 °F | 1.84 in. |
| March | 37.7 °F | 61.9 °F | 3.07 in. |
| April | 47.1 °F | 71.4 °F | 4.53 in. |
| May | 57.5 °F | 78.7 °F | 5.85 in. |
| June | 66.6 °F | 87.1 °F | 5.14 in. |
| July | 70.7 °F | 92.5 °F | 3.96 in. |
| August | 68.8 °F | 92.6 °F | 3.46 in. |
| September | 60.5 °F | 84.4 °F | 3.59 in. |
| October | 48.1 °F | 73.5 °F | 3.38 in. |
| November | 37.2 °F | 61.0 °F | 2.5 in. |
| December | 28.4 °F | 50.1 °F | 2.03 in. |
| Annual | 48 °F | 71.2 °F | 40.97 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |