| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 64°F | 52°F | 10.9" |
| February | 48°F | 67°F | 56°F | 6.4" |
| March | 54°F | 74°F | 63°F | 5.0" |
| April | 61°F | 79°F | 69°F | 10.9" |
| May | 68°F | 85°F | 76°F | 23.5" |
| June | 75°F | 91°F | 82°F | 9.5" |
| July | 75°F | 92°F | 83°F | 7.0" |
| August | 76°F | 93°F | 83°F | 12.9" |
| September | 71°F | 89°F | 79°F | 11.2" |
| October | 60°F | 83°F | 71°F | 10.5" |
| November | 52°F | 73°F | 61°F | 11.7" |
| December | 47°F | 66°F | 55°F | 5.8" |
| Index | Carlyss | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 13,526,400 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 239 |
| Days with moderate air quality | 126 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.220% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.550% |
| Lead | 0.060% |
| Mercury | 0.670% |
| City | Population | Air Quality Index | National Avg. |
| Moss Bluff, LA | 10,352 | 45 | 10.0% |
| Westlake, LA | 4,788 | 45 | 10.0% |
| Gillis, LA | 587 | 45 | 10.0% |
| Prien, LA | 8,469 | 45 | 10.0% |
| Hackberry, LA | 1,315 | 45 | 10.0% |
| Carlyss, LA | 5,185 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Glendale, CO | 5,186 | 58 | 16.0% |
| LaBelle, FL | 5,186 | 36 | 28.0% |
| Lemmon Valley, NV | 5,183 | 46 | 8.0% |
| Whitfield, PA | 5,183 | 42 | 16.0% |
| Tyrone, PA | 5,182 | 41 | 18.0% |
| Carlyss, LA | 5,185 | 45 | 10.0% |
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