Jenks, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.6 °F (low) to 71.5 °F (high). Annual precipitation averages 42.3 Inches. Jenks 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 | 26.0 °F | 48.7 °F | 1.76 in. |
| February | 29.3 °F | 53.0 °F | 1.93 in. |
| March | 38.2 °F | 62.1 °F | 3.36 in. |
| April | 47.4 °F | 71.5 °F | 4.36 in. |
| May | 58.1 °F | 78.9 °F | 6.06 in. |
| June | 67.2 °F | 87.7 °F | 4.66 in. |
| July | 71.1 °F | 92.6 °F | 3.94 in. |
| August | 69.3 °F | 92.5 °F | 3.48 in. |
| September | 61.1 °F | 84.8 °F | 3.75 in. |
| October | 48.5 °F | 73.8 °F | 3.65 in. |
| November | 37.7 °F | 61.7 °F | 2.95 in. |
| December | 28.9 °F | 50.8 °F | 2.38 in. |
| Annual | 48.6 °F | 71.5 °F | 42.28 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 |