| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 31°F | 25°F | 3.5" |
| February | 18°F | 33°F | 25°F | 2.9" |
| March | 29°F | 47°F | 37°F | 4.2" |
| April | 39°F | 60°F | 49°F | 3.4" |
| May | 51°F | 71°F | 60°F | 8.2" |
| June | 60°F | 79°F | 69°F | 6.2" |
| July | 62°F | 82°F | 72°F | 3.9" |
| August | 61°F | 80°F | 70°F | 5.0" |
| September | 54°F | 74°F | 63°F | 2.8" |
| October | 44°F | 62°F | 52°F | 4.9" |
| November | 33°F | 49°F | 40°F | 2.8" |
| December | 24°F | 36°F | 30°F | 2.5" |
| Index | Colon | Michigan | National |
| Air quality index | 38 | 69 | 42 |
| Pollution index | 1,872,410 | 4,161,606 | 2,726,193 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 312 |
| Days with moderate air quality | 50 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Sturgis, MI | 10,853 | 37 | 26.0% |
| Bronson, MI | 2,061 | 38 | 24.0% |
| Mendon, MI | 835 | 38 | 24.0% |
| Union City, MI | 1,731 | 38 | 24.0% |
| Burlington, MI | 299 | 38 | 24.0% |
| Colon, MI | 1,128 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Brooklyn, CT | 1,128 | 33 | 34.0% |
| Kissee Mills, MO | 1,128 | 18 | 64.0% |
| Brunswick, NC | 1,128 | 30 | 40.0% |
| Shady Point, OK | 1,128 | 36 | 28.0% |
| Conestoga, PA | 1,128 | 45 | 10.0% |
| Colon, MI | 1,128 | 38 | 24.0% |
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