Corn, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48 °F (low) to 72.6 °F (high). Annual precipitation averages 30.7 Inches. Corn is located in USDA Plant Hardiness Zone 7b. 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 | 26.0 °F | 50.0 °F | 1.07 in. |
| February | 29.1 °F | 53.7 °F | 1.27 in. |
| March | 37.4 °F | 62.9 °F | 2.34 in. |
| April | 45.6 °F | 71.6 °F | 2.98 in. |
| May | 56.6 °F | 80.7 °F | 4.37 in. |
| June | 66.4 °F | 90.2 °F | 4.04 in. |
| July | 70.4 °F | 95.4 °F | 2.45 in. |
| August | 69.0 °F | 94.4 °F | 3.54 in. |
| September | 61.3 °F | 86.1 °F | 2.73 in. |
| October | 48.8 °F | 74.3 °F | 2.87 in. |
| November | 37.0 °F | 61.4 °F | 1.61 in. |
| December | 27.9 °F | 50.9 °F | 1.38 in. |
| Annual | 48 °F | 72.6 °F | 30.65 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |