| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 30°F | 20°F | 2.9" |
| February | 12°F | 32°F | 22°F | 2.5" |
| March | 21°F | 41°F | 31°F | 3.6" |
| April | 34°F | 56°F | 45°F | 4.7" |
| May | 44°F | 65°F | 54°F | 3.6" |
| June | 54°F | 74°F | 63°F | 5.5" |
| July | 59°F | 80°F | 69°F | 4.6" |
| August | 56°F | 78°F | 66°F | 3.5" |
| September | 49°F | 71°F | 60°F | 4.0" |
| October | 39°F | 58°F | 48°F | 7.6" |
| November | 30°F | 48°F | 39°F | 5.7" |
| December | 17°F | 35°F | 26°F | 3.8" |
| Index | Newport | Maine | National |
| Air quality index | 31 | 33 | 42 |
| Pollution index | 1,854,040 | 3,417,521 | 2,726,193 |
| Measurement | Total |
| Days measured | 361 |
| Days with good air quality | 348 |
| Days with moderate air quality | 13 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.005% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Clinton, ME | 1,227 | 28 | 44.0% |
| Dexter, ME | 1,981 | 31 | 38.0% |
| Hartland, ME | 531 | 31 | 38.0% |
| Pittsfield, ME | 3,035 | 31 | 38.0% |
| Newport, ME | 1,911 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Cold Spring, NY | 1,911 | 36 | 28.0% |
| Lattingtown, NY | 1,911 | 51 | 2.0% |
| Tappahannock, VA | 1,911 | 44 | 12.0% |
| Lot 19, PE | 1,911 | n/a | |
| Olla, LA | 1,912 | 30 | 40.0% |
| Newport, ME | 1,911 | 31 | 38.0% |
Here are the best places to live in Maine
These are the 10 cheapest cities in Maine
Most Dangerous Cities In The US
Check out the 10 safest cities in Maine