New Buffalo, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.4 °F (low) to 58.2 °F (high). Annual precipitation averages 38.9 Inches. 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 | 19.0 °F | 32.2 °F | 2.58 in. |
| February | 21.3 °F | 35.4 °F | 2.09 in. |
| March | 29.1 °F | 45.3 °F | 2.32 in. |
| April | 39.0 °F | 56.9 °F | 3.48 in. |
| May | 49.4 °F | 67.9 °F | 3.69 in. |
| June | 59.5 °F | 76.9 °F | 4.24 in. |
| July | 65.1 °F | 81.2 °F | 3.97 in. |
| August | 64.2 °F | 79.7 °F | 4.13 in. |
| September | 57.2 °F | 74.0 °F | 3.35 in. |
| October | 45.0 °F | 62.1 °F | 3.91 in. |
| November | 35.0 °F | 48.9 °F | 2.75 in. |
| December | 25.1 °F | 37.4 °F | 2.37 in. |
| Annual | 42.4 °F | 58.2 °F | 38.88 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |