| 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 | Shipshewana | Indiana | National |
| Air quality index | 37 | 56 | 42 |
| Pollution index | 1,872,410 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 294 |
| Days with moderate air quality | 71 |
| 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. |
| Millersburg, IN | 836 | 37 | 26.0% |
| Middlebury, IN | 3,663 | 37 | 26.0% |
| New Paris, IN | 1,498 | 37 | 26.0% |
| Bristol, IN | 1,595 | 37 | 26.0% |
| Constantine, MI | 2,272 | 37 | 26.0% |
| Shipshewana, IN | 1,057 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Primghar, IA | 1,057 | 35 | 30.0% |
| Montrose, BC | 1,057 | n/a | |
| Merrill, IA | 1,056 | 35 | 30.0% |
| Goodland, IN | 1,058 | 42 | 16.0% |
| New Franklin, MO | 1,056 | 38 | 24.0% |
| Shipshewana, IN | 1,057 | 37 | 26.0% |