Suffolk, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.6 °F (low) to 70.9 °F (high). Annual precipitation averages 51.4 Inches. Suffolk 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.4 °F | 51.3 °F | 3.7 in. |
| February | 31.9 °F | 54.2 °F | 2.9 in. |
| March | 38.2 °F | 60.9 °F | 4.04 in. |
| April | 47.8 °F | 70.8 °F | 3.75 in. |
| May | 56.8 °F | 78.1 °F | 4.02 in. |
| June | 65.2 °F | 85.5 °F | 4.71 in. |
| July | 69.6 °F | 89.1 °F | 5.31 in. |
| August | 68.1 °F | 87.5 °F | 5.9 in. |
| September | 62.7 °F | 82.3 °F | 5.54 in. |
| October | 50.7 °F | 73.0 °F | 4.26 in. |
| November | 39.7 °F | 63.1 °F | 3.61 in. |
| December | 33.8 °F | 54.9 °F | 3.65 in. |
| Annual | 49.6 °F | 70.9 °F | 51.39 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |