Knobel, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.5 °F (low) to 69.5 °F (high). Annual precipitation averages 49.9 Inches. Knobel is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 28.2 °F | 45.1 °F | 3.55 in. |
| February | 31.4 °F | 50.3 °F | 3.81 in. |
| March | 39.3 °F | 59.7 °F | 4.71 in. |
| April | 49.0 °F | 70.6 °F | 5.44 in. |
| May | 59.2 °F | 79.1 °F | 5.09 in. |
| June | 67.7 °F | 87.1 °F | 3.49 in. |
| July | 71.1 °F | 90.0 °F | 3.99 in. |
| August | 68.7 °F | 88.8 °F | 3.38 in. |
| September | 60.6 °F | 83.1 °F | 3.48 in. |
| October | 48.6 °F | 72.6 °F | 3.77 in. |
| November | 38.8 °F | 59.0 °F | 4.66 in. |
| December | 31.3 °F | 48.1 °F | 4.5 in. |
| Annual | 49.5 °F | 69.5 °F | 49.87 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |