| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 60°F | 45°F | 1.9" |
| February | 37°F | 64°F | 49°F | 1.8" |
| March | 46°F | 73°F | 58°F | 3.5" |
| April | 53°F | 80°F | 65°F | 3.4" |
| May | 61°F | 85°F | 72°F | 3.8" |
| June | 70°F | 93°F | 81°F | 3.2" |
| July | 72°F | 97°F | 84°F | 2.7" |
| August | 72°F | 97°F | 84°F | 2.8" |
| September | 65°F | 90°F | 77°F | 2.8" |
| October | 54°F | 81°F | 66°F | 2.8" |
| November | 44°F | 70°F | 56°F | 2.1" |
| December | 35°F | 60°F | 45°F | 1.5" |
| Index | Mineral Wells | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 453,692 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.005% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Millsap, TX | 311 | 33 | 34.0% |
| Graford, TX | 705 | 33 | 34.0% |
| Palo Pinto, TX | 179 | 33 | 34.0% |
| Cool, TX | 156 | 33 | 34.0% |
| Mineral Wells, TX | 15,683 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Clarksdale, MS | 15,683 | 43 | 14.0% |
| Bemidji, MN | 15,682 | 29 | 42.0% |
| Great Bend, KS | 15,685 | 15 | 70.0% |
| Beech Grove, IN | 15,679 | 54 | 8.0% |
| West Hants, NS | 15,678 | n/a | |
| Mineral Wells, TX | 15,683 | 33 | 34.0% |