Duchess Landing, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.1 °F (low) to 72.2 °F (high). Annual precipitation averages 45.3 Inches. Duchess Landing is located in USDA Plant Hardiness Zone 7b. 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 | 27.9 °F | 49.8 °F | 2.49 in. |
| February | 31.6 °F | 54.1 °F | 2.28 in. |
| March | 40.2 °F | 63.1 °F | 3.79 in. |
| April | 48.7 °F | 71.9 °F | 4.42 in. |
| May | 58.9 °F | 79.1 °F | 5.83 in. |
| June | 67.8 °F | 87.6 °F | 4.74 in. |
| July | 71.6 °F | 92.7 °F | 3.36 in. |
| August | 70.4 °F | 92.8 °F | 3.39 in. |
| September | 62.3 °F | 85.4 °F | 4.65 in. |
| October | 50.5 °F | 74.5 °F | 4.06 in. |
| November | 40.0 °F | 62.8 °F | 3.48 in. |
| December | 31.0 °F | 52.1 °F | 2.82 in. |
| Annual | 50.1 °F | 72.2 °F | 45.31 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |