| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 32°F | 25°F | 4.0" |
| February | 17°F | 33°F | 25°F | 3.0" |
| March | 27°F | 46°F | 36°F | 3.8" |
| April | 37°F | 59°F | 47°F | 4.8" |
| May | 48°F | 71°F | 59°F | 5.0" |
| June | 56°F | 79°F | 67°F | 5.7" |
| July | 60°F | 82°F | 71°F | 5.1" |
| August | 58°F | 80°F | 69°F | 6.6" |
| September | 52°F | 74°F | 62°F | 4.6" |
| October | 42°F | 62°F | 51°F | 6.6" |
| November | 32°F | 49°F | 40°F | 3.3" |
| December | 24°F | 36°F | 30°F | 2.2" |
| Index | Mulliken | Michigan | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 8,357,230 | 4,161,606 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 330 |
| Days with moderate air quality | 35 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.070% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.090% |
| Mercury | 0.120% |
| City | Population | Air Quality Index | National Avg. |
| Nashville, MI | 1,461 | 36 | 28.0% |
| Eagle, MI | 116 | 36 | 28.0% |
| Wacousta, MI | 1,698 | 36 | 28.0% |
| Portland, MI | 3,931 | 36 | 28.0% |
| Potterville, MI | 2,731 | 36 | 28.0% |
| Mulliken, MI | 589 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Schall Circle, FL | 589 | 36 | 28.0% |
| Albert City, IA | 589 | 35 | 30.0% |
| Grand Tower, IL | 589 | 43 | 14.0% |
| Camden, IN | 589 | 42 | 16.0% |
| River Bluff, KY | 589 | 49 | 2.0% |
| Mulliken, MI | 589 | 36 | 28.0% |
Here are the best places to live in Michigan
Check out the 10 most dangerous cities in Michigan
Safest States In The US
Check out the 10 safest cities in Michigan