| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 28°F | 20°F | 1.0" |
| February | 13°F | 29°F | 21°F | 0.7" |
| March | 25°F | 43°F | 33°F | 1.9" |
| April | 37°F | 57°F | 46°F | 3.6" |
| May | 48°F | 70°F | 58°F | 3.7" |
| June | 58°F | 78°F | 68°F | 5.2" |
| July | 62°F | 83°F | 72°F | 3.6" |
| August | 60°F | 80°F | 70°F | 3.5" |
| September | 52°F | 73°F | 62°F | 3.0" |
| October | 42°F | 60°F | 50°F | 2.9" |
| November | 30°F | 46°F | 38°F | 1.7" |
| December | 18°F | 32°F | 25°F | 1.5" |
| Index | Ripon | Wisconsin | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 1,324,900 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 202 |
| Days with good air quality | 195 |
| Days with moderate air quality | 7 |
| 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 | 0.000% |
| Lead | 0.000% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Oakfield, WI | 1,119 | 36 | 28.0% |
| Omro, WI | 3,696 | 36 | 28.0% |
| Lohrville, WI | 411 | 36 | 28.0% |
| Redgranite, WI | 2,178 | 36 | 28.0% |
| Rosendale, WI | 927 | 36 | 28.0% |
| Ripon, WI | 8,110 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Bellevue, OH | 8,110 | 40 | 20.0% |
| East Franklin, NJ | 8,106 | 41 | 18.0% |
| York, NE | 8,115 | 19 | 62.0% |
| Gilberts, IL | 8,116 | 42 | 16.0% |
| Dexter, MO | 8,103 | 26 | 48.0% |
| Ripon, WI | 8,110 | 36 | 28.0% |
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