| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 59°F | 47°F | 5.0" |
| February | 39°F | 62°F | 49°F | 5.0" |
| March | 47°F | 71°F | 58°F | 6.1" |
| April | 54°F | 78°F | 66°F | 5.2" |
| May | 61°F | 84°F | 72°F | 4.3" |
| June | 69°F | 91°F | 79°F | 3.9" |
| July | 71°F | 92°F | 81°F | 6.1" |
| August | 71°F | 92°F | 81°F | 5.9" |
| September | 65°F | 88°F | 76°F | 3.2" |
| October | 53°F | 79°F | 65°F | 3.3" |
| November | 43°F | 68°F | 55°F | 4.0" |
| December | 40°F | 61°F | 49°F | 5.4" |
| Index | Lauderdale | Mississippi | National |
| Air quality index | 36 | 40 | 42 |
| Pollution index | 2,737,890 | 1,514,109 | 2,726,193 |
| Measurement | Total |
| Days measured | 245 |
| Days with good air quality | 229 |
| Days with moderate air quality | 16 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.005% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Meridian Station, MS | 450 | 36 | 28.0% |
| York, AL | 2,448 | 36 | 28.0% |
| Toomsuba, MS | 623 | 36 | 28.0% |
| Marion, MS | 1,992 | 36 | 28.0% |
| Cuba, AL | 294 | 36 | 28.0% |
| Lauderdale, MS | 270 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Waukeenah, FL | 270 | 40 | 20.0% |
| Buckingham, IL | 270 | 0 | 100.0% |
| Clifford, IN | 270 | 41 | 18.0% |
| Beech Grove, KY | 270 | 43 | 14.0% |
| Delta, LA | 270 | 44 | 12.0% |
| Lauderdale, MS | 270 | 36 | 28.0% |
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