| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 34°F | 27°F | 2.6" |
| February | 20°F | 35°F | 27°F | 1.8" |
| March | 28°F | 47°F | 37°F | 2.5" |
| April | 37°F | 60°F | 48°F | 4.0" |
| May | 47°F | 70°F | 58°F | 3.5" |
| June | 56°F | 79°F | 68°F | 3.3" |
| July | 61°F | 82°F | 72°F | 3.6" |
| August | 60°F | 81°F | 70°F | 4.8" |
| September | 53°F | 75°F | 63°F | 3.4" |
| October | 43°F | 63°F | 53°F | 5.5" |
| November | 33°F | 51°F | 42°F | 2.7" |
| December | 25°F | 39°F | 32°F | 2.5" |
| Index | Shorewood-Tower Hills-Harbert | Michigan | National |
| Air quality index | 37 | 69 | 42 |
| Pollution index | 4,961,970 | 4,161,606 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 305 |
| Days with moderate air quality | 55 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Michiana Shores, IN | 349 | 37 | 26.0% |
| Grand Beach, MI | 292 | 37 | 26.0% |
| Long Beach, IN | 1,024 | 37 | 26.0% |
| Michigan City, IN | 31,191 | 37 | 26.0% |
| Michiana, MI | 255 | 37 | 26.0% |
| Shorewood-Tower Hills-Harbert, MI | 1,501 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Panora, IA | 1,501 | 39 | 22.0% |
| McArthur, OH | 1,501 | 25 | 50.0% |
| Wellington, UT | 1,501 | 46 | 8.0% |
| Newton, AL | 1,502 | 35 | 30.0% |
| Hawthorne, FL | 1,500 | 35 | 30.0% |
| Shorewood-Tower Hills-Harbert, MI | 1,501 | 37 | 26.0% |
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