Ivanhoe, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.5 °C (low) to 18.2 °C (high). Annual precipitation averages 1086.9 Millimeters. Ivanhoe 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 6.4 °C | 84.07 mm |
| February | -3.6 °C | 8.3 °C | 71.37 mm |
| March | -0.2 °C | 12.8 °C | 89.92 mm |
| April | 4.5 °C | 18.5 °C | 95.5 mm |
| May | 9.6 °C | 22.9 °C | 111.51 mm |
| June | 14.1 °C | 26.7 °C | 110.49 mm |
| July | 16.3 °C | 28.6 °C | 106.43 mm |
| August | 15.6 °C | 27.9 °C | 93.98 mm |
| September | 11.9 °C | 24.8 °C | 91.69 mm |
| October | 5.3 °C | 19.4 °C | 77.72 mm |
| November | -0.1 °C | 13.4 °C | 70.61 mm |
| December | -3 °C | 8.2 °C | 83.57 mm |
| Annual | 5.5 °C | 18.2 °C | 1086.86 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Dfb - Humid Continental Mild Summer, Wet All Year |