| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 55°F | 39°F | 1.3" |
| February | 31°F | 58°F | 43°F | 1.7" |
| March | 40°F | 69°F | 53°F | 2.6" |
| April | 48°F | 76°F | 61°F | 4.3" |
| May | 57°F | 82°F | 69°F | 5.9" |
| June | 67°F | 91°F | 79°F | 5.2" |
| July | 71°F | 96°F | 83°F | 4.4" |
| August | 70°F | 95°F | 82°F | 3.9" |
| September | 62°F | 88°F | 74°F | 3.7" |
| October | 50°F | 78°F | 62°F | 3.3" |
| November | 39°F | 67°F | 52°F | 1.3" |
| December | 28°F | 54°F | 40°F | 1.6" |
| Index | Chickasha | Oklahoma | National |
| Air quality index | 48 | 55 | 42 |
| Pollution index | 1,343,540 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 204 |
| Days with moderate air quality | 159 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Cyril, OK | 932 | 43 | 14.0% |
| Ninnekah, OK | 1,150 | 43 | 14.0% |
| Norge, OK | 180 | 43 | 14.0% |
| Verden, OK | 584 | 43 | 14.0% |
| Cement, OK | 440 | 43 | 14.0% |
| Chickasha, OK | 16,326 | 48 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Coos Bay, OR | 16,326 | 19 | 62.0% |
| Beaver Dam, WI | 16,322 | 40 | 20.0% |
| Lebanon, IN | 16,317 | 54 | 8.0% |
| Fort Thomas, KY | 16,335 | 54 | 8.0% |
| Pearl River, NY | 16,340 | 51 | 2.0% |
| Chickasha, OK | 16,326 | 48 | 4.0% |
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