Northwest, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.4 °F (low) to 74.4 °F (high). Annual precipitation averages 57.8 Inches. Northwest is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.0 °F | 56.9 °F | 3.94 in. |
| February | 34.7 °F | 59.6 °F | 3.53 in. |
| March | 40.6 °F | 66.8 °F | 4.11 in. |
| April | 49.5 °F | 74.5 °F | 3.45 in. |
| May | 58.4 °F | 81.3 °F | 4.11 in. |
| June | 66.9 °F | 87.3 °F | 5.54 in. |
| July | 70.7 °F | 90.3 °F | 6.02 in. |
| August | 69.3 °F | 88.7 °F | 6.9 in. |
| September | 64.1 °F | 84.1 °F | 8.35 in. |
| October | 52.1 °F | 76.0 °F | 4.55 in. |
| November | 41.6 °F | 67.0 °F | 3.53 in. |
| December | 36.1 °F | 59.8 °F | 3.76 in. |
| Annual | 51.4 °F | 74.4 °F | 57.79 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |