| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 33°F | 25°F | 2.4" |
| February | 15°F | 35°F | 25°F | 1.8" |
| March | 25°F | 47°F | 35°F | 2.3" |
| April | 35°F | 62°F | 48°F | 3.3" |
| May | 46°F | 73°F | 60°F | 4.9" |
| June | 56°F | 82°F | 69°F | 3.4" |
| July | 59°F | 85°F | 73°F | 3.8" |
| August | 58°F | 83°F | 71°F | 3.5" |
| September | 51°F | 77°F | 63°F | 3.4" |
| October | 41°F | 64°F | 52°F | 2.9" |
| November | 30°F | 51°F | 40°F | 2.2" |
| December | 22°F | 37°F | 30°F | 2.0" |
| Index | Middletown | Michigan | National |
| Air quality index | 38 | 69 | 42 |
| Pollution index | 1,401,450 | 4,161,606 | 2,726,193 |
| Measurement | Total |
| Days measured | 340 |
| Days with good air quality | 282 |
| Days with moderate air quality | 58 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.005% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Laingsburg, MI | 1,586 | 36 | 28.0% |
| Ovid, MI | 1,559 | 36 | 28.0% |
| Lake Victoria, MI | 810 | 36 | 28.0% |
| Elsie, MI | 1,066 | 36 | 28.0% |
| Morrice, MI | 1,453 | 36 | 28.0% |
| Middletown, MI | 839 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Tulelake, CA | 839 | 29 | 42.0% |
| Dayton, IA | 839 | 37 | 26.0% |
| Horseshoe Bend, ID | 839 | 36 | 28.0% |
| Brownstown, IL | 839 | 40 | 20.0% |
| Ventress, LA | 839 | 45 | 10.0% |
| Middletown, MI | 839 | 38 | 24.0% |
Here are the best places to live in Michigan
These are the 10 cheapest cities in Michigan
Most Dangerous States In The US
Check out the 10 most dangerous cities in Michigan