| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 28°F | 20°F | 3.0" |
| February | 13°F | 29°F | 20°F | 0.9" |
| March | 21°F | 41°F | 30°F | 2.9" |
| April | 34°F | 56°F | 43°F | 4.3" |
| May | 46°F | 66°F | 54°F | 4.9" |
| June | 58°F | 79°F | 68°F | 17.2" |
| July | 59°F | 81°F | 69°F | 3.9" |
| August | 60°F | 80°F | 69°F | 5.1" |
| September | 55°F | 75°F | 63°F | 3.4" |
| October | 45°F | 62°F | 52°F | 7.0" |
| November | 28°F | 44°F | 35°F | 3.8" |
| December | 14°F | 29°F | 22°F | 1.7" |
| Index | Stephenson | Michigan | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 2,395,990 | 4,161,606 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 311 |
| Days with moderate air quality | 54 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.002% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Carney, MI | 227 | 36 | 28.0% |
| Daggett, MI | 237 | 36 | 28.0% |
| Stephenson, MI | 888 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Waverly Hall, GA | 888 | 42 | 16.0% |
| Aplington, IA | 888 | 39 | 22.0% |
| Walker, IA | 888 | 39 | 22.0% |
| Schroon Lake, NY | 888 | 36 | 28.0% |
| Mission, OR | 888 | 38 | 24.0% |
| Stephenson, MI | 888 | 36 | 28.0% |
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