Campti, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.8 °C (low) to 25.2 °C (high). Annual precipitation averages 1438.2 Millimeters. Campti 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 | 2.8 °C | 14.6 °C | 140.21 mm |
| February | 4.4 °C | 16.9 °C | 125.48 mm |
| March | 8.3 °C | 21.2 °C | 139.45 mm |
| April | 12.4 °C | 25.3 °C | 137.16 mm |
| May | 17.2 °C | 29.3 °C | 117.6 mm |
| June | 21.2 °C | 32.7 °C | 113.54 mm |
| July | 22.8 °C | 34.2 °C | 104.39 mm |
| August | 22.3 °C | 34.4 °C | 94.49 mm |
| September | 18.8 °C | 31.6 °C | 95 mm |
| October | 12.4 °C | 26.2 °C | 111 mm |
| November | 7 °C | 20.3 °C | 119.13 mm |
| December | 3.8 °C | 15.7 °C | 140.72 mm |
| Annual | 12.8 °C | 25.2 °C | 1438.17 mm |
| 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 : -9.4°C to -6.7°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 |