New Chicago, 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 15.6 °C (high). Annual precipitation averages 1023.9 Millimeters. New Chicago 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.6 °C | 0.6 °C | 59.94 mm |
| February | -6.2 °C | 2.6 °C | 51.56 mm |
| March | -1.5 °C | 8.4 °C | 61.47 mm |
| April | 4.1 °C | 15.2 °C | 92.46 mm |
| May | 9.9 °C | 21.2 °C | 105.41 mm |
| June | 15.4 °C | 26.6 °C | 118.62 mm |
| July | 18.2 °C | 28.7 °C | 106.68 mm |
| August | 17.4 °C | 27.8 °C | 107.95 mm |
| September | 13.3 °C | 24.7 °C | 89.66 mm |
| October | 6.9 °C | 17.8 °C | 98.55 mm |
| November | 1.1 °C | 9.9 °C | 73.66 mm |
| December | -4.4 °C | 3.3 °C | 57.91 mm |
| Annual | 5.6 °C | 15.6 °C | 1023.87 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 |