| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 54°F | 41°F | 2.2" |
| February | 35°F | 57°F | 45°F | 2.0" |
| March | 45°F | 68°F | 55°F | 3.6" |
| April | 52°F | 76°F | 63°F | 5.6" |
| May | 60°F | 81°F | 69°F | 7.1" |
| June | 70°F | 90°F | 79°F | 4.7" |
| July | 72°F | 94°F | 82°F | 4.6" |
| August | 72°F | 94°F | 82°F | 3.6" |
| September | 64°F | 88°F | 74°F | 3.1" |
| October | 52°F | 77°F | 63°F | 4.1" |
| November | 43°F | 66°F | 53°F | 2.7" |
| December | 33°F | 55°F | 43°F | 2.8" |
| Index | McAlester | Oklahoma | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 1,454,170 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 272 |
| Days with moderate air quality | 91 |
| 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 | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Haileyville, OK | 670 | 43 | 14.0% |
| Savanna, OK | 591 | 43 | 14.0% |
| Alderson, OK | 174 | 43 | 14.0% |
| Hartshorne, OK | 1,805 | 43 | 14.0% |
| Kiowa, OK | 679 | 43 | 14.0% |
| McAlester, OK | 18,042 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Oxon Hill, MD | 18,049 | 47 | 6.0% |
| Gibsonton, FL | 18,053 | 43 | 14.0% |
| Saint-Basile-le-Grand, QC | 18,054 | n/a | |
| Avon, IN | 18,056 | 54 | 8.0% |
| St. Matthews, KY | 18,022 | 49 | 2.0% |
| McAlester, OK | 18,042 | 43 | 14.0% |
Here are the best places to live in Oklahoma
See the best places to live in McAlester
These are the largest cities in Oklahoma
Check out the 10 most dangerous cities in Oklahoma