Russellville, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.5 °F (low) to 72.7 °F (high). Annual precipitation averages 50.8 Inches. Russellville 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 | 29.2 °F | 50.1 °F | 3.79 in. |
| February | 32.2 °F | 55.3 °F | 3.54 in. |
| March | 39.7 °F | 64.1 °F | 4.73 in. |
| April | 48.3 °F | 73.1 °F | 5.07 in. |
| May | 58.2 °F | 80.5 °F | 5.35 in. |
| June | 66.6 °F | 88.4 °F | 3.88 in. |
| July | 70.0 °F | 92.6 °F | 3.63 in. |
| August | 68.7 °F | 92.5 °F | 3.69 in. |
| September | 61.0 °F | 85.7 °F | 3.63 in. |
| October | 49.0 °F | 75.1 °F | 3.99 in. |
| November | 39.0 °F | 62.2 °F | 4.82 in. |
| December | 31.8 °F | 52.4 °F | 4.68 in. |
| Annual | 49.5 °F | 72.7 °F | 50.8 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |