Norwood, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.9 °C (low) to 25.4 °C (high). Annual precipitation averages 1650.5 Millimeters. Norwood is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 15.8 °C | 174.24 mm |
| February | 5.2 °C | 18.1 °C | 142.24 mm |
| March | 8.7 °C | 21.9 °C | 143.26 mm |
| April | 12.4 °C | 25.6 °C | 132.33 mm |
| May | 16.9 °C | 29.1 °C | 134.87 mm |
| June | 20.6 °C | 32.1 °C | 138.68 mm |
| July | 21.8 °C | 32.9 °C | 150.37 mm |
| August | 21.6 °C | 33.3 °C | 156.72 mm |
| September | 18.9 °C | 31.2 °C | 110.49 mm |
| October | 12.8 °C | 26.6 °C | 117.6 mm |
| November | 7.6 °C | 21 °C | 114.05 mm |
| December | 4.5 °C | 16.8 °C | 135.64 mm |
| Annual | 12.9 °C | 25.4 °C | 1650.49 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |