| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 63°F | 53°F | 11.1" |
| February | 47°F | 66°F | 55°F | 4.3" |
| March | 53°F | 73°F | 62°F | 6.1" |
| April | 60°F | 79°F | 69°F | 7.2" |
| May | 66°F | 85°F | 75°F | 20.3" |
| June | 73°F | 90°F | 81°F | 8.9" |
| July | 75°F | 91°F | 82°F | 10.1" |
| August | 76°F | 92°F | 83°F | 3.4" |
| September | 71°F | 89°F | 79°F | 17.1" |
| October | 60°F | 81°F | 69°F | 4.7" |
| November | 51°F | 72°F | 61°F | 5.6" |
| December | 47°F | 65°F | 54°F | 6.6" |
| Index | Roanoke | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 907,803 | 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 | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Morse, LA | 1,239 | 41 | 18.0% |
| Egan, LA | 1,002 | 41 | 18.0% |
| Gueydan, LA | 1,184 | 41 | 18.0% |
| Mermentau, LA | 616 | 41 | 18.0% |
| Jennings, LA | 9,874 | 45 | 10.0% |
| Roanoke, LA | 550 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Eek, AK | 550 | 31 | 38.0% |
| New Cuyama, CA | 550 | 44 | 12.0% |
| San Simeon, CA | 550 | 46 | 8.0% |
| Camargo, IL | 550 | 42 | 16.0% |
| Thebes, IL | 550 | 44 | 12.0% |
| Roanoke, LA | 550 | 45 | 10.0% |
Here are the best places to live in Louisiana
These are the 10 most affordable cities in Louisiana
Top 10 cities in Louisiana with the best education system
Check out the 10 safest cities in Louisiana