| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 52°F | 41°F | 9.0" |
| February | 34°F | 54°F | 43°F | 6.2" |
| March | 43°F | 65°F | 52°F | 4.9" |
| April | 50°F | 74°F | 61°F | 7.0" |
| May | 58°F | 79°F | 67°F | 4.2" |
| June | 65°F | 88°F | 76°F | 4.9" |
| July | 68°F | 90°F | 78°F | 7.6" |
| August | 68°F | 89°F | 77°F | 5.8" |
| September | 62°F | 83°F | 71°F | 3.7" |
| October | 50°F | 73°F | 60°F | 6.2" |
| November | 40°F | 63°F | 50°F | 5.1" |
| December | 37°F | 55°F | 45°F | 7.9" |
| Index | Cullman | Alabama | National |
| Air quality index | 41 | 37 | 42 |
| Pollution index | 1,446,000 | 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 | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.004% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Eva, AL | 538 | 41 | 18.0% |
| South Vinemont, AL | 600 | 41 | 18.0% |
| Falkville, AL | 1,382 | 41 | 18.0% |
| Fairview, AL | 657 | 41 | 18.0% |
| Good Hope, AL | 2,870 | 41 | 18.0% |
| Cullman, AL | 16,072 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Albemarle, NC | 16,073 | 40 | 20.0% |
| Harrisburg, NC | 16,073 | 49 | 2.0% |
| Cold Lake, AB | 16,076 | n/a | |
| Zephyrhills, FL | 16,062 | 36 | 28.0% |
| Laguna Woods, CA | 16,056 | 89 | 78.0% |
| Cullman, AL | 16,072 | 41 | 18.0% |
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