| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 29°F | 20°F | 2.3" |
| February | 10°F | 30°F | 20°F | 1.4" |
| March | 19°F | 42°F | 30°F | 2.1" |
| April | 30°F | 57°F | 43°F | 3.5" |
| May | 42°F | 70°F | 56°F | 3.2" |
| June | 51°F | 79°F | 65°F | 3.9" |
| July | 55°F | 82°F | 69°F | 2.9" |
| August | 53°F | 80°F | 67°F | 3.0" |
| September | 46°F | 73°F | 59°F | 2.8" |
| October | 37°F | 60°F | 48°F | 3.1" |
| November | 28°F | 46°F | 37°F | 2.2" |
| December | 18°F | 33°F | 26°F | 2.2" |
| Index | Jennings | Michigan | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 1,468,630 | 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 | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Boon, MI | 93 | 36 | 28.0% |
| Lake City, MI | 729 | 36 | 28.0% |
| Cadillac, MI | 10,462 | 36 | 28.0% |
| McBain, MI | 724 | 36 | 28.0% |
| Hardwood Acres, MI | 708 | 36 | 28.0% |
| Jennings, MI | 253 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| McIntosh, AL | 253 | 42 | 16.0% |
| Lava Hot Springs, ID | 253 | 27 | 46.0% |
| Spring Lake, IN | 253 | 54 | 8.0% |
| Westport, KY | 253 | 49 | 2.0% |
| Watersmeet, MI | 253 | 8 | 84.0% |
| Jennings, MI | 253 | 36 | 28.0% |
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