| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 55°F | 44°F | 2.4" |
| February | 40°F | 61°F | 49°F | 3.3" |
| March | 48°F | 73°F | 59°F | 10.1" |
| April | 53°F | 79°F | 65°F | 22.9" |
| May | 63°F | 83°F | 72°F | 10.7" |
| June | 70°F | 93°F | 80°F | 11.0" |
| July | 71°F | 94°F | 81°F | 3.9" |
| August | 73°F | 93°F | 82°F | 15.4" |
| September | 69°F | 92°F | 79°F | 4.8" |
| October | 55°F | 80°F | 67°F | 4.7" |
| November | 45°F | 72°F | 57°F | 4.0" |
| December | 34°F | 61°F | 45°F | 1.3" |
| Index | Winters | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 321,162 | 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 | 0.004% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ballinger, TX | 3,805 | 33 | 34.0% |
| Lawn, TX | 341 | 33 | 34.0% |
| Winters, TX | 2,652 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Blue Hills, CT | 2,652 | 41 | 18.0% |
| Sibley, IA | 2,652 | 36 | 28.0% |
| Venetian Village, IL | 2,652 | 39 | 22.0% |
| Lake Providence, LA | 2,652 | 34 | 32.0% |
| Owensville, MO | 2,652 | 39 | 22.0% |
| Winters, TX | 2,652 | 33 | 34.0% |