Windsor, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 21.8 °C (high). Annual precipitation averages 1304 Millimeters. Windsor is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.4 °C | 11.1 °C | 94.74 mm |
| February | 0.6 °C | 12.8 °C | 79.5 mm |
| March | 3.9 °C | 16.7 °C | 103.12 mm |
| April | 9.2 °C | 22.1 °C | 91.69 mm |
| May | 14.2 °C | 25.9 °C | 95.5 mm |
| June | 18.9 °C | 29.9 °C | 126.24 mm |
| July | 21.2 °C | 31.7 °C | 141.22 mm |
| August | 20.3 °C | 30.8 °C | 143.51 mm |
| September | 17.2 °C | 27.8 °C | 158.5 mm |
| October | 10.5 °C | 22.9 °C | 97.54 mm |
| November | 4.5 °C | 17.4 °C | 85.09 mm |
| December | 1.3 °C | 13 °C | 87.38 mm |
| Annual | 10.1 °C | 21.8 °C | 1304.03 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |