New Virginia, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 15.8 °C (high). Annual precipitation averages 937.8 Millimeters. New Virginia is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.6 °C | -0.4 °C | 24.38 mm |
| February | -8.4 °C | 2.2 °C | 33.02 mm |
| March | -2.4 °C | 9.3 °C | 54.1 mm |
| April | 3.6 °C | 16.4 °C | 97.28 mm |
| May | 10.2 °C | 22 °C | 134.87 mm |
| June | 15.8 °C | 27.3 °C | 129.29 mm |
| July | 18.2 °C | 29.6 °C | 109.22 mm |
| August | 16.7 °C | 28.6 °C | 105.92 mm |
| September | 11.6 °C | 24.7 °C | 94.23 mm |
| October | 4.9 °C | 17.9 °C | 68.58 mm |
| November | -1.7 °C | 9.5 °C | 50.55 mm |
| December | -7.4 °C | 2.3 °C | 36.32 mm |
| Annual | 4.2 °C | 15.8 °C | 937.76 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |