Mathews, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.7 °C (low) to 20.1 °C (high). Annual precipitation averages 1259.6 Millimeters. Mathews 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 | -0.4 °C | 8.9 °C | 91.19 mm |
| February | 0.3 °C | 10.3 °C | 78.74 mm |
| March | 3.7 °C | 13.8 °C | 107.95 mm |
| April | 8.9 °C | 19.9 °C | 93.47 mm |
| May | 14.3 °C | 24.1 °C | 100.33 mm |
| June | 19.3 °C | 28.6 °C | 107.7 mm |
| July | 21.9 °C | 30.9 °C | 132.08 mm |
| August | 21.2 °C | 29.7 °C | 141.22 mm |
| September | 18.6 °C | 26.9 °C | 125.22 mm |
| October | 12.3 °C | 21.5 °C | 108.71 mm |
| November | 6.3 °C | 15.7 °C | 78.74 mm |
| December | 2.1 °C | 11.3 °C | 94.23 mm |
| Annual | 10.7 °C | 20.1 °C | 1259.58 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |