| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 70°F | 55°F | 1.2" |
| February | 48°F | 75°F | 60°F | 1.0" |
| March | 55°F | 82°F | 67°F | 1.7" |
| April | 62°F | 88°F | 74°F | 1.7" |
| May | 68°F | 93°F | 79°F | 3.3" |
| June | 73°F | 98°F | 85°F | 1.8" |
| July | 75°F | 99°F | 86°F | 3.2" |
| August | 75°F | 101°F | 87°F | 1.5" |
| September | 71°F | 95°F | 82°F | 3.2" |
| October | 63°F | 88°F | 74°F | 2.0" |
| November | 54°F | 79°F | 65°F | 0.7" |
| December | 46°F | 69°F | 56°F | 1.4" |
| Index | Big Wells | Texas | National |
| Air quality index | 25 | 52 | 42 |
| Pollution index | 233,769 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 339 |
| Days with good air quality | 287 |
| Days with moderate air quality | 51 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Asherton, TX | 832 | 25 | 50.0% |
| Brundage, TX | 0 | 25 | 50.0% |
| Big Wells, TX | 787 | 25 | 50.0% |
| City | Population | Air Quality Index | National Avg. |
| Allentown, FL | 787 | 41 | 18.0% |
| St. Charles, IA | 787 | 39 | 22.0% |
| Napoleon, ND | 787 | 36 | 28.0% |
| Wadsworth, NV | 787 | 39 | 22.0% |
| McClure, OH | 787 | 40 | 20.0% |
| Big Wells, TX | 787 | 25 | 50.0% |
Here are the best places to live in Texas
Check out the 10 safest cities in Texas
These are the largest cities in Texas
Check out the 10 most dangerous cities in Texas