| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 65°F | 53°F | 1.5" |
| February | 48°F | 69°F | 57°F | 1.3" |
| March | 54°F | 75°F | 64°F | 1.9" |
| April | 61°F | 81°F | 70°F | 2.2" |
| May | 67°F | 87°F | 76°F | 2.9" |
| June | 72°F | 92°F | 81°F | 3.0" |
| July | 74°F | 94°F | 82°F | 4.0" |
| August | 74°F | 95°F | 83°F | 4.7" |
| September | 70°F | 91°F | 79°F | 4.0" |
| October | 60°F | 85°F | 71°F | 2.4" |
| November | 53°F | 75°F | 62°F | 1.9" |
| December | 47°F | 67°F | 56°F | 2.8" |
| Index | Louise | Texas | National |
| Air quality index | 31 | 52 | 42 |
| Pollution index | 1,269,560 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 341 |
| Days with good air quality | 319 |
| Days with moderate air quality | 22 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Edna, TX | 5,951 | 31 | 38.0% |
| El Campo, TX | 12,061 | 31 | 38.0% |
| Ganado, TX | 2,185 | 31 | 38.0% |
| Louise, TX | 964 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Salcha, AK | 964 | 38 | 24.0% |
| Leland, IL | 964 | 0 | 100.0% |
| De Kalb, MS | 964 | 36 | 28.0% |
| North Tunica, MS | 964 | 45 | 10.0% |
| Cyril, OK | 964 | 43 | 14.0% |
| Louise, TX | 964 | 31 | 38.0% |