New Ross, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 16.2 °C (high). Annual precipitation averages 1102.6 Millimeters. New Ross is located in USDA Plant Hardiness Zone 6a. 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 | -7.2 °C | 1.4 °C | 73.91 mm |
| February | -5.8 °C | 3.6 °C | 61.21 mm |
| March | -0.8 °C | 9.7 °C | 80.01 mm |
| April | 5.1 °C | 16.6 °C | 113.54 mm |
| May | 11.2 °C | 22.4 °C | 117.6 mm |
| June | 16.1 °C | 26.9 °C | 129.79 mm |
| July | 17.7 °C | 28.5 °C | 114.3 mm |
| August | 16.4 °C | 27.8 °C | 87.38 mm |
| September | 12.3 °C | 25.1 °C | 82.04 mm |
| October | 6.1 °C | 18.3 °C | 82.8 mm |
| November | 0.4 °C | 10.3 °C | 86.87 mm |
| December | -4.4 °C | 3.9 °C | 73.15 mm |
| Annual | 5.6 °C | 16.2 °C | 1102.6 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 6a : -23.3°C to -20.6°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 |