Muir, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.3 °F (low) to 57.4 °F (high). Annual precipitation averages 36.2 Inches. Muir 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 | 16.1 °F | 29.9 °F | 2.33 in. |
| February | 16.6 °F | 32.9 °F | 2.09 in. |
| March | 24.6 °F | 43.4 °F | 2.25 in. |
| April | 34.7 °F | 57.0 °F | 3.61 in. |
| May | 46.6 °F | 69.0 °F | 4.05 in. |
| June | 56.8 °F | 78.4 °F | 3.58 in. |
| July | 60.4 °F | 82.2 °F | 3.33 in. |
| August | 58.9 °F | 80.2 °F | 3.59 in. |
| September | 50.7 °F | 73.1 °F | 3.02 in. |
| October | 40.2 °F | 60.4 °F | 3.32 in. |
| November | 31.0 °F | 46.7 °F | 2.8 in. |
| December | 22.5 °F | 35.2 °F | 2.18 in. |
| Annual | 38.3 °F | 57.4 °F | 36.15 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |