| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 64°F | 52°F | 8.0" |
| February | 46°F | 68°F | 56°F | 5.1" |
| March | 52°F | 75°F | 63°F | 5.5" |
| April | 59°F | 81°F | 69°F | 4.9" |
| May | 64°F | 86°F | 74°F | 7.0" |
| June | 72°F | 91°F | 80°F | 7.5" |
| July | 74°F | 92°F | 82°F | 6.0" |
| August | 74°F | 92°F | 81°F | 9.7" |
| September | 69°F | 90°F | 78°F | 4.4" |
| October | 58°F | 83°F | 69°F | 3.2" |
| November | 49°F | 73°F | 59°F | 5.0" |
| December | 45°F | 67°F | 54°F | 5.9" |
| Index | Grosse Tete | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 394,287 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 224 |
| Days with moderate air quality | 132 |
| Days w/ poor A.Q. for sensitive groups | 9 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Erwinville, LA | 2,815 | 45 | 10.0% |
| Livonia, LA | 1,304 | 45 | 10.0% |
| Port Allen, LA | 4,883 | 45 | 10.0% |
| Addis, LA | 5,635 | 45 | 10.0% |
| Maringouin, LA | 536 | 45 | 10.0% |
| Grosse Tete, LA | 514 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Babbie, AL | 514 | 35 | 30.0% |
| Kingsland, AR | 514 | 32 | 36.0% |
| Turkey Creek, AZ | 514 | 44 | 12.0% |
| Burlington, IL | 514 | 42 | 16.0% |
| Cawker City, KS | 514 | 19 | 62.0% |
| Grosse Tete, LA | 514 | 45 | 10.0% |
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