| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 62°F | 49°F | 8.0" |
| February | 43°F | 67°F | 53°F | 3.9" |
| March | 50°F | 74°F | 61°F | 8.5" |
| April | 58°F | 80°F | 68°F | 6.8" |
| May | 65°F | 86°F | 75°F | 10.2" |
| June | 72°F | 93°F | 83°F | 10.1" |
| July | 75°F | 95°F | 85°F | 15.2" |
| August | 74°F | 97°F | 85°F | 11.2" |
| September | 68°F | 90°F | 79°F | 6.6" |
| October | 58°F | 82°F | 70°F | 2.8" |
| November | 49°F | 71°F | 59°F | 5.0" |
| December | 41°F | 63°F | 51°F | 4.3" |
| Index | Bartlett | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 4,598,870 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 284 |
| Days with moderate air quality | 79 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.070% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Holland, TX | 1,574 | 42 | 16.0% |
| Granger, TX | 1,146 | 42 | 16.0% |
| Rogers, TX | 1,396 | 42 | 16.0% |
| Jarrell, TX | 1,392 | 42 | 16.0% |
| Salado, TX | 2,848 | 42 | 16.0% |
| Bartlett, TX | 1,658 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Key Vista, FL | 1,659 | 43 | 14.0% |
| Corydon, IA | 1,659 | 39 | 22.0% |
| Caney, KS | 1,659 | 38 | 24.0% |
| Stockton, KS | 1,659 | 19 | 62.0% |
| Munfordville, KY | 1,659 | 39 | 22.0% |
| Bartlett, TX | 1,658 | 42 | 16.0% |
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