Norton, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.3 °C (low) to 18.1 °C (high). Annual precipitation averages 1228.1 Millimeters. Norton is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 5.8 °C | 106.68 mm |
| February | -3.1 °C | 8 °C | 111 mm |
| March | 0.6 °C | 12.9 °C | 104.9 mm |
| April | 5.7 °C | 18.9 °C | 99.82 mm |
| May | 10.6 °C | 23 °C | 100.58 mm |
| June | 14.9 °C | 26.7 °C | 123.7 mm |
| July | 17.1 °C | 28.1 °C | 148.08 mm |
| August | 16.4 °C | 27.7 °C | 93.22 mm |
| September | 13 °C | 25.2 °C | 90.68 mm |
| October | 6.6 °C | 19.4 °C | 76.71 mm |
| November | 0.8 °C | 13 °C | 73.15 mm |
| December | -2.2 °C | 7.9 °C | 99.57 mm |
| Annual | 6.3 °C | 18.1 °C | 1228.09 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |