New Buffalo, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.8 °C (low) to 14.5 °C (high). Annual precipitation averages 987.6 Millimeters. New Buffalo is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.2 °C | 0.1 °C | 65.53 mm |
| February | -5.9 °C | 1.9 °C | 53.09 mm |
| March | -1.6 °C | 7.4 °C | 58.93 mm |
| April | 3.9 °C | 13.8 °C | 88.39 mm |
| May | 9.7 °C | 19.9 °C | 93.73 mm |
| June | 15.3 °C | 24.9 °C | 107.7 mm |
| July | 18.4 °C | 27.3 °C | 100.84 mm |
| August | 17.9 °C | 26.5 °C | 104.9 mm |
| September | 14 °C | 23.3 °C | 85.09 mm |
| October | 7.2 °C | 16.7 °C | 99.31 mm |
| November | 1.7 °C | 9.4 °C | 69.85 mm |
| December | -3.8 °C | 3 °C | 60.2 mm |
| Annual | 5.8 °C | 14.5 °C | 987.56 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |