| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 52°F | 41°F | 5.0" |
| February | 34°F | 55°F | 44°F | 3.6" |
| March | 43°F | 66°F | 53°F | 4.4" |
| April | 51°F | 75°F | 62°F | 5.2" |
| May | 59°F | 81°F | 69°F | 4.5" |
| June | 67°F | 90°F | 78°F | 3.1" |
| July | 69°F | 91°F | 79°F | 4.3" |
| August | 68°F | 91°F | 78°F | 3.4" |
| September | 61°F | 85°F | 72°F | 2.9" |
| October | 50°F | 75°F | 61°F | 3.6" |
| November | 39°F | 64°F | 51°F | 3.7" |
| December | 36°F | 56°F | 45°F | 5.6" |
| Index | Moulton | Alabama | National |
| Air quality index | 41 | 37 | 42 |
| Pollution index | 6,960,530 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 306 |
| Days with moderate air quality | 59 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.100% |
| Carbon Tetrachloride | 0.060% |
| Lead | 0.030% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Leighton, AL | 789 | 37 | 26.0% |
| Hatton, AL | 59 | 37 | 26.0% |
| Town Creek, AL | 943 | 37 | 26.0% |
| Hillsboro, AL | 590 | 41 | 18.0% |
| Trinity, AL | 2,593 | 41 | 18.0% |
| Moulton, AL | 3,237 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Burlington, CO | 3,237 | 45 | 10.0% |
| Taylor Creek, OH | 3,236 | 54 | 8.0% |
| Cross Mountain, TX | 3,238 | 49 | 2.0% |
| Tyro, NC | 3,239 | 40 | 20.0% |
| Williams, AZ | 3,234 | 45 | 10.0% |
| Moulton, AL | 3,237 | 41 | 18.0% |
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