Mooringsport, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.2 °F (low) to 76.1 °F (high). Annual precipitation averages 51.8 Inches. Mooringsport is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.2 °F | 56.4 °F | 4.53 in. |
| February | 38.6 °F | 60.6 °F | 4.47 in. |
| March | 45.7 °F | 68.4 °F | 4.98 in. |
| April | 53.2 °F | 76.2 °F | 4.92 in. |
| May | 62.6 °F | 83.2 °F | 4.22 in. |
| June | 70.2 °F | 90.1 °F | 4.52 in. |
| July | 73.2 °F | 93.5 °F | 3.27 in. |
| August | 72.2 °F | 94.1 °F | 3.03 in. |
| September | 65.5 °F | 88.5 °F | 3.77 in. |
| October | 53.7 °F | 77.8 °F | 4.73 in. |
| November | 43.8 °F | 66.6 °F | 4.17 in. |
| December | 37.0 °F | 58.1 °F | 5.15 in. |
| Annual | 54.2 °F | 76.1 °F | 51.76 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 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 |