Bennington, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51 °F (low) to 74.1 °F (high). Annual precipitation averages 45.1 Inches. Bennington is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.2 °F | 52.8 °F | 2.6 in. |
| February | 34.0 °F | 57.2 °F | 2.78 in. |
| March | 41.7 °F | 65.2 °F | 3.93 in. |
| April | 49.4 °F | 73.2 °F | 4.12 in. |
| May | 59.5 °F | 80.5 °F | 6.15 in. |
| June | 67.9 °F | 88.8 °F | 4.39 in. |
| July | 71.3 °F | 93.8 °F | 3.17 in. |
| August | 70.2 °F | 94.3 °F | 2.88 in. |
| September | 63.1 °F | 87.5 °F | 3.73 in. |
| October | 51.2 °F | 76.4 °F | 4.4 in. |
| November | 40.9 °F | 64.7 °F | 3.52 in. |
| December | 32.6 °F | 54.9 °F | 3.38 in. |
| Annual | 51 °F | 74.1 °F | 45.05 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |