Norfolk, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.7 °C (low) to 20.9 °C (high). Annual precipitation averages 1279.7 Millimeters. Norfolk is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1 °C | 10.2 °C | 90.42 mm |
| February | 1.7 °C | 11.5 °C | 71.63 mm |
| March | 5.2 °C | 15.1 °C | 101.09 mm |
| April | 10.3 °C | 20.6 °C | 91.69 mm |
| May | 15.2 °C | 24.8 °C | 106.17 mm |
| June | 20.1 °C | 28.9 °C | 120.14 mm |
| July | 22.5 °C | 31.3 °C | 135.38 mm |
| August | 21.8 °C | 30.2 °C | 144.78 mm |
| September | 19.2 °C | 27.2 °C | 135.64 mm |
| October | 12.9 °C | 22 °C | 105.92 mm |
| November | 7 °C | 16.5 °C | 85.6 mm |
| December | 3.3 °C | 12.3 °C | 91.19 mm |
| Annual | 11.7 °C | 20.9 °C | 1279.65 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |