Fairgrove, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.5 °F (low) to 56.6 °F (high). Annual precipitation averages 33 Inches. Fairgrove is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.1 °F | 29.3 °F | 2.0 in. |
| February | 15.0 °F | 31.9 °F | 1.65 in. |
| March | 23.5 °F | 42.0 °F | 1.92 in. |
| April | 34.3 °F | 55.3 °F | 3.41 in. |
| May | 45.8 °F | 67.8 °F | 3.5 in. |
| June | 55.7 °F | 77.8 °F | 3.46 in. |
| July | 59.3 °F | 81.6 °F | 3.27 in. |
| August | 57.5 °F | 79.4 °F | 3.22 in. |
| September | 50.4 °F | 73.2 °F | 2.94 in. |
| October | 39.9 °F | 60.1 °F | 3.12 in. |
| November | 30.7 °F | 46.1 °F | 2.49 in. |
| December | 22.2 °F | 34.7 °F | 1.97 in. |
| Annual | 37.5 °F | 56.6 °F | 32.95 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Dfb - Humid Continental Mild Summer, Wet All Year |