Ruston, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.7 °F (low) to 76 °F (high). Annual precipitation averages 55.6 Inches. Ruston is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.4 °F | 57.0 °F | 5.49 in. |
| February | 37.6 °F | 61.1 °F | 4.99 in. |
| March | 44.1 °F | 68.8 °F | 5.02 in. |
| April | 51.1 °F | 75.8 °F | 5.29 in. |
| May | 60.6 °F | 83.0 °F | 4.78 in. |
| June | 68.1 °F | 89.7 °F | 4.58 in. |
| July | 71.2 °F | 92.6 °F | 3.65 in. |
| August | 70.3 °F | 92.7 °F | 3.7 in. |
| September | 63.6 °F | 88.0 °F | 3.56 in. |
| October | 52.2 °F | 78.1 °F | 4.77 in. |
| November | 42.6 °F | 66.9 °F | 4.5 in. |
| December | 36.2 °F | 58.6 °F | 5.24 in. |
| Annual | 52.7 °F | 76 °F | 55.57 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |