| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 45°F | 62°F | 53°F | 4.2" |
| February | 49°F | 64°F | 56°F | 3.0" |
| March | 55°F | 71°F | 63°F | 2.1" |
| April | 64°F | 77°F | 70°F | 2.8" |
| May | 70°F | 83°F | 76°F | 2.2" |
| June | 77°F | 89°F | 82°F | 2.0" |
| July | 78°F | 90°F | 83°F | 3.5" |
| August | 78°F | 90°F | 84°F | 4.8" |
| September | 74°F | 88°F | 80°F | 3.1" |
| October | 64°F | 81°F | 72°F | 2.5" |
| November | 55°F | 72°F | 61°F | 1.9" |
| December | 50°F | 65°F | 57°F | 4.7" |
| Index | Glencoe | Louisiana | National |
| Air quality index | 41 | 106 | 42 |
| Pollution index | 1,616,480 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 280 |
| Days with moderate air quality | 85 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Baldwin, LA | 1,876 | 41 | 18.0% |
| Jeanerette, LA | 5,321 | 41 | 18.0% |
| Charenton, LA | 1,560 | 41 | 18.0% |
| Lydia, LA | 1,326 | 41 | 18.0% |
| Franklin, LA | 6,844 | 41 | 18.0% |
| Glencoe, LA | 258 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Gordon, AL | 258 | 35 | 30.0% |
| Weogufka, AL | 258 | 38 | 24.0% |
| St. Francis, AR | 258 | 26 | 48.0% |
| Ambrose, GA | 258 | 26 | 48.0% |
| Maalaea, HI | 258 | 15 | 70.0% |
| Glencoe, LA | 258 | 41 | 18.0% |
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