Carleton, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 59 °F (high). Annual precipitation averages 35.8 Inches. Carleton 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.8 °F | 32.4 °F | 2.42 in. |
| February | 18.8 °F | 35.3 °F | 2.05 in. |
| March | 27.0 °F | 45.1 °F | 2.48 in. |
| April | 37.6 °F | 58.2 °F | 3.11 in. |
| May | 48.8 °F | 69.8 °F | 3.88 in. |
| June | 58.5 °F | 79.3 °F | 3.78 in. |
| July | 62.3 °F | 83.2 °F | 3.34 in. |
| August | 60.7 °F | 81.2 °F | 3.43 in. |
| September | 53.8 °F | 75.1 °F | 3.37 in. |
| October | 41.9 °F | 62.5 °F | 2.81 in. |
| November | 32.2 °F | 48.8 °F | 2.7 in. |
| December | 24.2 °F | 37.6 °F | 2.4 in. |
| Annual | 40.3 °F | 59 °F | 35.77 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |