| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 30°F | 19°F | 4.5" |
| February | 11°F | 31°F | 20°F | 2.4" |
| March | 21°F | 42°F | 29°F | 5.1" |
| April | 34°F | 54°F | 43°F | 12.1" |
| May | 43°F | 63°F | 52°F | 6.0" |
| June | 54°F | 78°F | 64°F | 3.0" |
| July | 59°F | 81°F | 69°F | 3.2" |
| August | 57°F | 80°F | 67°F | 6.6" |
| September | 51°F | 74°F | 61°F | 5.5" |
| October | 43°F | 60°F | 50°F | 17.1" |
| November | 30°F | 46°F | 36°F | 9.0" |
| December | 17°F | 33°F | 23°F | 4.6" |
| Index | Skowhegan | Maine | National |
| Air quality index | 28 | 33 | 42 |
| Pollution index | 3,644,290 | 3,417,521 | 2,726,193 |
| Measurement | Total |
| Days measured | 361 |
| Days with good air quality | 356 |
| Days with moderate air quality | 5 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.030% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Anson, ME | 792 | 28 | 44.0% |
| Madison, ME | 2,712 | 28 | 44.0% |
| Clinton, ME | 1,227 | 28 | 44.0% |
| Norridgewock, ME | 1,272 | 28 | 44.0% |
| Fairfield, ME | 2,298 | 28 | 44.0% |
| Skowhegan, ME | 6,341 | 28 | 44.0% |
| City | Population | Air Quality Index | National Avg. |
| Carrollton, VA | 6,340 | 40 | 20.0% |
| Wilmore, KY | 6,339 | 42 | 16.0% |
| Swarthmore, PA | 6,339 | 51 | 2.0% |
| Braidwood, IL | 6,338 | 0 | 100.0% |
| Rockaway, NJ | 6,345 | 51 | 2.0% |
| Skowhegan, ME | 6,341 | 28 | 44.0% |
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