| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 65°F | 52°F | 7.3" |
| February | 45°F | 67°F | 54°F | 7.3" |
| March | 52°F | 74°F | 62°F | 7.7" |
| April | 58°F | 80°F | 68°F | 9.7" |
| May | 63°F | 84°F | 73°F | 10.8" |
| June | 71°F | 90°F | 80°F | 6.2" |
| July | 72°F | 90°F | 80°F | 5.8" |
| August | 72°F | 90°F | 80°F | 9.5" |
| September | 69°F | 89°F | 77°F | 8.0" |
| October | 58°F | 82°F | 69°F | 24.8" |
| November | 47°F | 71°F | 57°F | 9.5" |
| December | 46°F | 66°F | 54°F | 10.8" |
| Index | Simmesport | Louisiana | National |
| Air quality index | 30 | 106 | 42 |
| Pollution index | 10,683,000 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 119 |
| Days with good air quality | 107 |
| Days with moderate air quality | 12 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.380% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.150% |
| Mercury | 0.250% |
| City | Population | Air Quality Index | National Avg. |
| Marksville, LA | 5,376 | 30 | 40.0% |
| Bordelonville, LA | 490 | 30 | 40.0% |
| Moreauville, LA | 1,130 | 30 | 40.0% |
| Cottonport, LA | 1,792 | 30 | 40.0% |
| Plaucheville, LA | 190 | 30 | 40.0% |
| Simmesport, LA | 1,395 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Wyoming, IL | 1,395 | 41 | 18.0% |
| Colmar Manor, MD | 1,395 | 47 | 6.0% |
| Troy, PA | 1,395 | 36 | 28.0% |
| Hurley, WI | 1,395 | 8 | 84.0% |
| Saint-Joachim-de-Shefford, QC | 1,395 | n/a | |
| Simmesport, LA | 1,395 | 30 | 40.0% |
Here are the best places to live in Louisiana
10 Best cities in Louisiana for employment
Check out the 10 safest cities in Louisiana
See the best places to live in & around Simmesport