| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 51°F | 40°F | 9.7" |
| February | 34°F | 55°F | 44°F | 4.4" |
| March | 45°F | 68°F | 55°F | 4.0" |
| April | 48°F | 71°F | 59°F | 4.1" |
| May | 59°F | 80°F | 69°F | 6.3" |
| June | 67°F | 87°F | 76°F | 8.0" |
| July | 69°F | 91°F | 79°F | 11.2" |
| August | 72°F | 93°F | 82°F | 11.4" |
| September | 65°F | 88°F | 75°F | 8.2" |
| October | 53°F | 77°F | 63°F | 4.6" |
| November | 41°F | 66°F | 53°F | 2.0" |
| December | 28°F | 52°F | 39°F | 3.3" |
| Index | Eufaula | 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. |
| Texanna, OK | 2,464 | 5 | 90.0% |
| Hoffman, OK | 107 | 5 | 90.0% |
| Checotah, OK | 3,219 | 5 | 90.0% |
| Duchess Landing, OK | 50 | 5 | 90.0% |
| Longtown, OK | 3,118 | 43 | 14.0% |
| Eufaula, OK | 2,943 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Cetronia, PA | 2,943 | 42 | 16.0% |
| Chincoteague, VA | 2,943 | 36 | 28.0% |
| Welch, WV | 2,943 | 295 | 490.0% |
| Good Hope, AL | 2,942 | 41 | 18.0% |
| Elgin, SC | 2,942 | 49 | 2.0% |
| Eufaula, OK | 2,943 | 43 | 14.0% |