| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 60°F | 48°F | 2.5" |
| February | 43°F | 64°F | 52°F | 1.9" |
| March | 51°F | 72°F | 60°F | 3.9" |
| April | 57°F | 79°F | 67°F | 2.8" |
| May | 64°F | 84°F | 73°F | 3.0" |
| June | 72°F | 92°F | 81°F | 3.1" |
| July | 73°F | 94°F | 83°F | 2.0" |
| August | 74°F | 96°F | 84°F | 1.9" |
| September | 68°F | 90°F | 78°F | 2.5" |
| October | 58°F | 80°F | 68°F | 3.8" |
| November | 49°F | 70°F | 58°F | 3.5" |
| December | 42°F | 61°F | 50°F | 3.2" |
| Index | Crockett | Texas | National |
| Air quality index | 36 | 52 | 42 |
| Pollution index | 1,202,460 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 326 |
| Days with moderate air quality | 37 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Lovelady, TX | 705 | 36 | 28.0% |
| Grapeland, TX | 1,985 | 36 | 28.0% |
| Latexo, TX | 411 | 36 | 28.0% |
| Crockett, TX | 6,663 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Eucalyptus Hills, CA | 6,662 | 64 | 28.0% |
| Aztec, NM | 6,661 | 49 | 2.0% |
| Cold Spring, KY | 6,659 | 54 | 8.0% |
| San Martin, CA | 6,657 | 43 | 14.0% |
| Lovejoy, GA | 6,669 | 52 | 4.0% |
| Crockett, TX | 6,663 | 36 | 28.0% |