| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 54°F | 41°F | 4.9" |
| February | 35°F | 58°F | 45°F | 9.2" |
| March | 45°F | 68°F | 55°F | 3.8" |
| April | 52°F | 76°F | 63°F | 9.1" |
| May | 60°F | 81°F | 69°F | 7.5" |
| June | 70°F | 90°F | 80°F | 10.7" |
| July | 73°F | 95°F | 83°F | 10.6" |
| August | 72°F | 95°F | 83°F | 1.4" |
| September | 64°F | 87°F | 75°F | 9.2" |
| October | 53°F | 77°F | 63°F | 6.3" |
| November | 43°F | 66°F | 53°F | 10.9" |
| December | 33°F | 54°F | 42°F | 5.6" |
| Index | Lexington | Oklahoma | National |
| Air quality index | 36 | 55 | 42 |
| Pollution index | 791,228 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 231 |
| Days with good air quality | 216 |
| Days with moderate air quality | 14 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Wayne, OK | 747 | 36 | 28.0% |
| Etowah, OK | 124 | 36 | 28.0% |
| Paoli, OK | 760 | 36 | 28.0% |
| Rosedale, OK | 32 | 36 | 28.0% |
| Maysville, OK | 1,486 | 48 | 4.0% |
| Lexington, OK | 2,244 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Augusta, AR | 2,244 | 45 | 10.0% |
| Bunker Hill, OR | 2,244 | 19 | 62.0% |
| Ina, IL | 2,243 | 43 | 14.0% |
| Caldwell, OH | 2,243 | 35 | 30.0% |
| Caruthers, CA | 2,245 | 60 | 20.0% |
| Lexington, OK | 2,244 | 36 | 28.0% |
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