| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 27°F | 20°F | 1.5" |
| February | 14°F | 28°F | 21°F | 0.6" |
| March | 24°F | 39°F | 31°F | 1.2" |
| April | 35°F | 51°F | 42°F | 3.1" |
| May | 45°F | 64°F | 53°F | 3.2" |
| June | 55°F | 73°F | 63°F | 5.3" |
| July | 61°F | 79°F | 69°F | 5.9" |
| August | 60°F | 76°F | 68°F | 3.2" |
| September | 54°F | 69°F | 61°F | 3.0" |
| October | 44°F | 57°F | 50°F | 4.2" |
| November | 32°F | 44°F | 38°F | 2.8" |
| December | 20°F | 31°F | 26°F | 1.3" |
| Index | Forestville | Wisconsin | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 1,046,860 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 311 |
| Days with moderate air quality | 54 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Little Sturgeon, WI | 181 | 36 | 28.0% |
| Sturgeon Bay, WI | 8,927 | 36 | 28.0% |
| Algoma, WI | 3,044 | 36 | 28.0% |
| Dyckesville, WI | 450 | 36 | 28.0% |
| Casco, WI | 597 | 36 | 28.0% |
| Forestville, WI | 475 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Ualapue, HI | 475 | 15 | 70.0% |
| Diagonal, IA | 475 | 39 | 22.0% |
| Garden Valley, ID | 475 | 36 | 28.0% |
| Dayton, IL | 475 | 0 | 100.0% |
| Grantfork, IL | 475 | 54 | 8.0% |
| Forestville, WI | 475 | 36 | 28.0% |
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