Irvington, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.8 °C (low) to 20 °C (high). Annual precipitation averages 1230.4 Millimeters. Irvington is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.3 °C | 8.6 °C | 88.65 mm |
| February | -0.7 °C | 9.9 °C | 71.88 mm |
| March | 2.8 °C | 13.8 °C | 109.22 mm |
| April | 8.2 °C | 19.8 °C | 88.39 mm |
| May | 13.7 °C | 24.2 °C | 98.3 mm |
| June | 18.6 °C | 28.6 °C | 110.49 mm |
| July | 21.2 °C | 31 °C | 126.49 mm |
| August | 20.4 °C | 29.8 °C | 132.33 mm |
| September | 17.4 °C | 26.8 °C | 124.46 mm |
| October | 11.2 °C | 21.3 °C | 106.93 mm |
| November | 5.2 °C | 15.4 °C | 77.98 mm |
| December | 1 °C | 10.8 °C | 95.25 mm |
| Annual | 9.8 °C | 20 °C | 1230.37 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |