| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 56°F | 43°F | 1.9" |
| February | 36°F | 60°F | 46°F | 1.8" |
| March | 46°F | 69°F | 56°F | 2.7" |
| April | 53°F | 76°F | 63°F | 3.4" |
| May | 61°F | 82°F | 71°F | 6.0" |
| June | 70°F | 91°F | 80°F | 3.8" |
| July | 73°F | 95°F | 83°F | 2.9" |
| August | 73°F | 96°F | 84°F | 2.2" |
| September | 65°F | 88°F | 76°F | 1.7" |
| October | 54°F | 78°F | 65°F | 2.2" |
| November | 44°F | 67°F | 54°F | 2.1" |
| December | 35°F | 56°F | 44°F | 2.2" |
| Index | Gainesville | Texas | National |
| Air quality index | 43 | 52 | 42 |
| Pollution index | 967,579 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 285 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Valley View, TX | 794 | 43 | 14.0% |
| Lindsay CDP, TX | 302 | 43 | 14.0% |
| Thackerville, OK | 400 | 43 | 14.0% |
| Muenster, TX | 1,287 | 43 | 14.0% |
| Callisburg, TX | 240 | 43 | 14.0% |
| Gainesville, TX | 16,557 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Abington, MA | 16,557 | 43 | 14.0% |
| South Venice, FL | 16,555 | 38 | 24.0% |
| Washington, IL | 16,555 | 41 | 18.0% |
| Mercedes, TX | 16,561 | 42 | 16.0% |
| Country Club Hills, IL | 16,564 | 55 | 10.0% |
| Gainesville, TX | 16,557 | 43 | 14.0% |
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