Waterproof, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.7 °C (low) to 24.9 °C (high). Annual precipitation averages 1522.2 Millimeters. Waterproof 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 | 14.2 °C | 150.88 mm |
| February | 4.3 °C | 16.7 °C | 138.18 mm |
| March | 8.4 °C | 21 °C | 145.29 mm |
| April | 12.5 °C | 25.1 °C | 138.43 mm |
| May | 17.3 °C | 29.1 °C | 118.11 mm |
| June | 21.2 °C | 32.2 °C | 125.98 mm |
| July | 22.6 °C | 33.4 °C | 116.84 mm |
| August | 21.9 °C | 33.7 °C | 109.47 mm |
| September | 18.8 °C | 31.3 °C | 104.14 mm |
| October | 12.3 °C | 26.5 °C | 105.66 mm |
| November | 6.9 °C | 20.2 °C | 128.02 mm |
| December | 3.9 °C | 15.6 °C | 141.22 mm |
| Annual | 12.7 °C | 24.9 °C | 1522.22 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |