| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 34°F | 27°F | 5.8" |
| February | 18°F | 31°F | 24°F | 3.3" |
| March | 30°F | 49°F | 38°F | 2.1" |
| April | 39°F | 61°F | 49°F | 4.0" |
| May | 49°F | 73°F | 60°F | 2.8" |
| June | 62°F | 83°F | 72°F | 5.0" |
| July | 62°F | 84°F | 73°F | 4.8" |
| August | 64°F | 82°F | 73°F | 10.7" |
| September | 56°F | 80°F | 67°F | 5.3" |
| October | 48°F | 67°F | 57°F | 3.6" |
| November | 34°F | 51°F | 41°F | 2.9" |
| December | 21°F | 33°F | 27°F | 2.0" |
| Index | Medaryville | Indiana | National |
| Air quality index | 37 | 56 | 42 |
| Pollution index | 898,555 | 2,719,453 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.005% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| North Judson, IN | 2,139 | 37 | 26.0% |
| San Pierre, IN | 248 | 37 | 26.0% |
| Wheatfield, IN | 701 | 37 | 26.0% |
| Knox, IN | 3,553 | 37 | 26.0% |
| Winamac, IN | 2,634 | 37 | 26.0% |
| Medaryville, IN | 712 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Duncan, AZ | 712 | 37 | 26.0% |
| Frankford, DE | 712 | 36 | 28.0% |
| Littlefork, MN | 712 | 35 | 30.0% |
| Dunkirk, OH | 712 | 39 | 22.0% |
| Driscoll, TX | 712 | 30 | 40.0% |
| Medaryville, IN | 712 | 37 | 26.0% |
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