| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 55°F | 44°F | 6.7" |
| February | 39°F | 61°F | 49°F | 2.7" |
| March | 48°F | 71°F | 59°F | 6.8" |
| April | 52°F | 75°F | 62°F | 11.1" |
| May | 64°F | 82°F | 72°F | 6.6" |
| June | 71°F | 91°F | 80°F | 16.5" |
| July | 72°F | 93°F | 81°F | 2.3" |
| August | 74°F | 97°F | 84°F | 4.2" |
| September | 69°F | 93°F | 81°F | 3.1" |
| October | 56°F | 81°F | 68°F | 3.9" |
| November | 46°F | 72°F | 58°F | 4.4" |
| December | 34°F | 60°F | 46°F | 2.7" |
| Index | Corinth | Texas | National |
| Air quality index | 51 | 52 | 42 |
| Pollution index | 967,579 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 181 |
| Days with moderate air quality | 155 |
| Days w/ poor A.Q. for sensitive groups | 28 |
| Days with unhealthy air quality | 1 |
| 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. |
| Krugerville, TX | 1,447 | 51 | 2.0% |
| Copper Canyon, TX | 1,578 | 51 | 2.0% |
| Flower Mound, TX | 78,854 | 51 | 2.0% |
| Lake Dallas, TX | 8,004 | 51 | 2.0% |
| Northlake, TX | 3,182 | 51 | 2.0% |
| Corinth, TX | 21,881 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Pace, FL | 21,898 | 41 | 18.0% |
| Leland, NC | 21,903 | 34 | 32.0% |
| Silverdale, WA | 21,858 | 18 | 64.0% |
| Fort St. John, BC | 21,858 | n/a | |
| Bloomingdale, IL | 21,905 | 55 | 10.0% |
| Corinth, TX | 21,881 | 51 | 2.0% |
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