| 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 | Tioga | Texas | National |
| Air quality index | 325 | 52 | 42 |
| Pollution index | 8,884,190 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 138 |
| Days with good air quality | 120 |
| Days with moderate air quality | 17 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.260% |
| Mercury | 0.020% |
| City | Population | Air Quality Index | National Avg. |
| Lake Kiowa, TX | 2,482 | 43 | 14.0% |
| Valley View, TX | 823 | 43 | 14.0% |
| Gainesville, TX | 16,922 | 43 | 14.0% |
| Aubrey, TX | 4,493 | 51 | 2.0% |
| Pilot Point, TX | 4,575 | 51 | 2.0% |
| Tioga, TX | 993 | 325 | 550.0% |
| City | Population | Air Quality Index | National Avg. |
| Beale AFB, CA | 993 | 44 | 12.0% |
| Montezuma, IN | 993 | 45 | 10.0% |
| Union Bridge, MD | 993 | 42 | 16.0% |
| Baltic, OH | 993 | 46 | 8.0% |
| Saint-Ludger, QC | 993 | n/a | |
| Tioga, TX | 993 | 325 | 550.0% |