| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 61°F | 48°F | 13.8" |
| February | 43°F | 64°F | 51°F | 10.3" |
| March | 49°F | 74°F | 59°F | 5.4" |
| April | 51°F | 78°F | 63°F | 6.2" |
| May | 62°F | 86°F | 72°F | 9.4" |
| June | 70°F | 92°F | 79°F | 22.5" |
| July | 71°F | 92°F | 80°F | 9.2" |
| August | 73°F | 96°F | 82°F | 11.2" |
| September | 70°F | 92°F | 79°F | 3.1" |
| October | 54°F | 83°F | 66°F | 10.9" |
| November | 49°F | 72°F | 59°F | 9.9" |
| December | 40°F | 65°F | 50°F | 7.0" |
| Index | Wells | Texas | National |
| Air quality index | 36 | 52 | 42 |
| Pollution index | 1,202,460 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 326 |
| Days with moderate air quality | 37 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hudson, TX | 5,038 | 36 | 28.0% |
| Lufkin, TX | 35,336 | 36 | 28.0% |
| Alto, TX | 1,099 | 36 | 28.0% |
| Redland, TX | 1,045 | 36 | 28.0% |
| Kennard, TX | 294 | 36 | 28.0% |
| Wells, TX | 899 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Hopland, CA | 899 | 33 | 34.0% |
| McCloud, CA | 899 | 42 | 16.0% |
| Stonington, CT | 899 | 37 | 26.0% |
| Cascade, ID | 899 | 36 | 28.0% |
| Hazelton, ID | 899 | 20 | 60.0% |
| Wells, TX | 899 | 36 | 28.0% |
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