| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 61°F | 47°F | 8.3" |
| February | 41°F | 66°F | 51°F | 5.3" |
| March | 47°F | 73°F | 58°F | 6.4" |
| April | 55°F | 80°F | 66°F | 6.5" |
| May | 62°F | 85°F | 73°F | 8.9" |
| June | 71°F | 94°F | 82°F | 8.4" |
| July | 73°F | 96°F | 84°F | 11.3" |
| August | 73°F | 97°F | 85°F | 11.8" |
| September | 67°F | 90°F | 77°F | 9.3" |
| October | 57°F | 82°F | 68°F | 12.1" |
| November | 47°F | 70°F | 57°F | 4.5" |
| December | 39°F | 62°F | 49°F | 4.4" |
| Index | Evant | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 389,634 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 284 |
| Days with moderate air quality | 79 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Evant, TX | 530 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Trafford, AL | 530 | 53 | 6.0% |
| Fort Green Springs, FL | 530 | 36 | 28.0% |
| Hammond, IL | 530 | 44 | 12.0% |
| San Jose, IL | 530 | 41 | 18.0% |
| Manitou, KY | 530 | 43 | 14.0% |
| Evant, TX | 530 | 42 | 16.0% |
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