Florien, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.9 °C (low) to 25.2 °C (high). Annual precipitation averages 1438.4 Millimeters. Florien is located in USDA Plant Hardiness Zone 9a. 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 | 3.1 °C | 14.8 °C | 146.05 mm |
| February | 4.9 °C | 17.2 °C | 119.13 mm |
| March | 8.6 °C | 21.3 °C | 127.76 mm |
| April | 12.4 °C | 25.2 °C | 123.44 mm |
| May | 17.2 °C | 29.1 °C | 120.9 mm |
| June | 21.1 °C | 32.4 °C | 118.62 mm |
| July | 22.3 °C | 33.9 °C | 101.09 mm |
| August | 22 °C | 34.2 °C | 102.11 mm |
| September | 18.9 °C | 31.3 °C | 95.5 mm |
| October | 12.8 °C | 26.3 °C | 113.79 mm |
| November | 7.3 °C | 20.3 °C | 129.79 mm |
| December | 4 °C | 15.9 °C | 140.21 mm |
| Annual | 12.9 °C | 25.2 °C | 1438.39 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |