| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 63°F | 49°F | 5.6" |
| February | 39°F | 65°F | 51°F | 5.2" |
| March | 47°F | 73°F | 59°F | 4.4" |
| April | 53°F | 80°F | 66°F | 4.1" |
| May | 60°F | 86°F | 72°F | 4.0" |
| June | 69°F | 92°F | 79°F | 3.5" |
| July | 71°F | 92°F | 80°F | 4.8" |
| August | 71°F | 92°F | 80°F | 5.9" |
| September | 66°F | 88°F | 75°F | 3.8" |
| October | 54°F | 80°F | 65°F | 3.4" |
| November | 43°F | 71°F | 55°F | 3.4" |
| December | 42°F | 65°F | 52°F | 7.0" |
| Index | Castleberry | Alabama | National |
| Air quality index | 41 | 37 | 42 |
| Pollution index | 1,560,990 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 279 |
| Days with moderate air quality | 85 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Repton, AL | 440 | 37 | 26.0% |
| Brewton, AL | 5,210 | 41 | 18.0% |
| East Brewton, AL | 3,093 | 41 | 18.0% |
| Evergreen, AL | 3,591 | 41 | 18.0% |
| Castleberry, AL | 426 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Ravenden, AR | 426 | 36 | 28.0% |
| Stotonic Village, AZ | 426 | 74 | 48.0% |
| Comanche Creek, CO | 426 | 45 | 10.0% |
| Ludlow, IL | 426 | 42 | 16.0% |
| St. George Island, MD | 426 | 41 | 18.0% |
| Castleberry, AL | 426 | 41 | 18.0% |
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