Haw River, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 21.5 °C (high). Annual precipitation averages 1181.1 Millimeters. Haw River 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 | -1.7 °C | 10.2 °C | 91.95 mm |
| February | -0.6 °C | 12.1 °C | 74.17 mm |
| March | 3.2 °C | 16.5 °C | 105.66 mm |
| April | 8.1 °C | 22 °C | 97.28 mm |
| May | 13.2 °C | 25.9 °C | 91.95 mm |
| June | 17.9 °C | 30.1 °C | 111 mm |
| July | 20.2 °C | 31.8 °C | 115.06 mm |
| August | 19.4 °C | 30.9 °C | 106.68 mm |
| September | 16 °C | 27.6 °C | 126.24 mm |
| October | 8.8 °C | 22.1 °C | 84.84 mm |
| November | 2.9 °C | 16.5 °C | 85.09 mm |
| December | 0.1 °C | 11.8 °C | 91.19 mm |
| Annual | 9 °C | 21.5 °C | 1181.11 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |