Clarence, 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 1437.1 Millimeters. Clarence 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 | 2.9 °C | 14.6 °C | 140.72 mm |
| February | 4.7 °C | 17 °C | 123.19 mm |
| March | 8.4 °C | 21.2 °C | 142.24 mm |
| April | 12.4 °C | 25.4 °C | 138.43 mm |
| May | 17.3 °C | 29.4 °C | 116.33 mm |
| June | 21.3 °C | 32.7 °C | 112.52 mm |
| July | 22.9 °C | 34.2 °C | 103.38 mm |
| August | 22.4 °C | 34.4 °C | 93.47 mm |
| September | 19.1 °C | 31.6 °C | 93.98 mm |
| October | 12.6 °C | 26.3 °C | 112.78 mm |
| November | 7.1 °C | 20.3 °C | 118.11 mm |
| December | 3.9 °C | 15.8 °C | 141.99 mm |
| Annual | 12.9 °C | 25.2 °C | 1437.14 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 |