Lacombe, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.5 °C (low) to 25.6 °C (high). Annual precipitation averages 1642.4 Millimeters. Lacombe is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.8 °C | 16.6 °C | 139.19 mm |
| February | 7.7 °C | 18.6 °C | 117.09 mm |
| March | 11.3 °C | 22.1 °C | 129.79 mm |
| April | 14.9 °C | 25.4 °C | 134.37 mm |
| May | 19.6 °C | 29.2 °C | 136.65 mm |
| June | 22.8 °C | 31.8 °C | 162.05 mm |
| July | 23.7 °C | 32.7 °C | 189.74 mm |
| August | 23.8 °C | 32.8 °C | 172.97 mm |
| September | 21.6 °C | 31.1 °C | 128.52 mm |
| October | 16.5 °C | 26.9 °C | 106.93 mm |
| November | 10.5 °C | 21.7 °C | 100.84 mm |
| December | 7.2 °C | 17.7 °C | 124.21 mm |
| Annual | 15.5 °C | 25.6 °C | 1642.35 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |