Olla, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.7 °F (low) to 77.4 °F (high). Annual precipitation averages 60.2 Inches. Olla 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 | 36.1 °F | 58.4 °F | 5.99 in. |
| February | 38.6 °F | 62.4 °F | 5.23 in. |
| March | 45.5 °F | 70.6 °F | 5.64 in. |
| April | 52.6 °F | 77.6 °F | 5.83 in. |
| May | 61.6 °F | 84.7 °F | 4.96 in. |
| June | 68.6 °F | 90.2 °F | 4.8 in. |
| July | 71.3 °F | 93.1 °F | 4.5 in. |
| August | 70.4 °F | 93.9 °F | 3.69 in. |
| September | 64.6 °F | 88.9 °F | 3.8 in. |
| October | 53.4 °F | 79.8 °F | 4.61 in. |
| November | 43.5 °F | 68.4 °F | 5.36 in. |
| December | 37.7 °F | 60.2 °F | 5.77 in. |
| Annual | 53.7 °F | 77.4 °F | 60.18 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |