| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 39°F | 30°F | 2.9" |
| February | 22°F | 40°F | 31°F | 2.3" |
| March | 34°F | 55°F | 44°F | 3.8" |
| April | 44°F | 68°F | 55°F | 5.1" |
| May | 54°F | 77°F | 65°F | 4.6" |
| June | 63°F | 85°F | 73°F | 6.3" |
| July | 64°F | 86°F | 75°F | 4.4" |
| August | 62°F | 85°F | 73°F | 3.0" |
| September | 56°F | 80°F | 67°F | 3.6" |
| October | 45°F | 68°F | 56°F | 3.5" |
| November | 34°F | 55°F | 44°F | 3.5" |
| December | 27°F | 43°F | 34°F | 4.1" |
| Index | St. Paul | Indiana | National |
| Air quality index | 41 | 56 | 42 |
| Pollution index | 847,937 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 298 |
| Days with moderate air quality | 66 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Rushville, IN | 6,395 | 28 | 44.0% |
| Manilla, IN | 499 | 28 | 44.0% |
| Milroy, IN | 666 | 28 | 44.0% |
| Hope, IN | 1,985 | 41 | 18.0% |
| Clifford, IN | 275 | 41 | 18.0% |
| St. Paul, IN | 1,125 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Gerber, CA | 1,125 | 41 | 18.0% |
| West Point, KY | 1,125 | 49 | 2.0% |
| Windsor, NY | 1,125 | 36 | 28.0% |
| Fieldale, VA | 1,125 | 38 | 24.0% |
| Woodstock, VT | 1,125 | 34 | 32.0% |
| St. Paul, IN | 1,125 | 41 | 18.0% |