Pleasant Hill, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.7 °C (low) to 25 °C (high). Annual precipitation averages 1406.4 Millimeters. Pleasant Hill 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 | 14.7 °C | 135.89 mm |
| February | 4.6 °C | 17.2 °C | 120.9 mm |
| March | 8.3 °C | 21.2 °C | 133.86 mm |
| April | 12.3 °C | 24.9 °C | 127.76 mm |
| May | 17 °C | 28.8 °C | 117.35 mm |
| June | 21.1 °C | 32.2 °C | 115.57 mm |
| July | 22.4 °C | 33.8 °C | 98.3 mm |
| August | 22 °C | 34.2 °C | 96.27 mm |
| September | 18.6 °C | 31.4 °C | 91.95 mm |
| October | 12.4 °C | 26.2 °C | 112.01 mm |
| November | 7 °C | 20.2 °C | 116.84 mm |
| December | 3.8 °C | 15.7 °C | 139.7 mm |
| Annual | 12.7 °C | 25 °C | 1406.4 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 |