| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 55°F | 41°F | 0.5" |
| February | 35°F | 58°F | 45°F | 0.7" |
| March | 45°F | 68°F | 55°F | 1.0" |
| April | 52°F | 75°F | 62°F | 1.1" |
| May | 59°F | 81°F | 69°F | 2.6" |
| June | 69°F | 92°F | 79°F | 0.9" |
| July | 71°F | 95°F | 82°F | 8.3" |
| August | 71°F | 95°F | 82°F | 2.5" |
| September | 63°F | 87°F | 73°F | 0.7" |
| October | 52°F | 77°F | 62°F | 2.4" |
| November | 42°F | 66°F | 52°F | 2.1" |
| December | 33°F | 54°F | 42°F | 3.8" |
| Index | Milburn | Oklahoma | National |
| Air quality index | 325 | 55 | 42 |
| Pollution index | 1,131,510 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 138 |
| Days with good air quality | 120 |
| Days with moderate air quality | 17 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ravia, OK | 557 | 43 | 14.0% |
| Connerville, OK | 147 | 43 | 14.0% |
| Madill, OK | 3,978 | 43 | 14.0% |
| Oakland, OK | 1,032 | 43 | 14.0% |
| Coleman, OK | 327 | 325 | 550.0% |
| Milburn, OK | 269 | 325 | 550.0% |
| City | Population | Air Quality Index | National Avg. |
| Tuluksak, AK | 269 | 31 | 38.0% |
| Akron, AL | 269 | 35 | 30.0% |
| Axis, AL | 269 | 42 | 16.0% |
| Parkdale, AR | 269 | 34 | 32.0% |
| Midland, CO | 269 | 45 | 10.0% |
| Milburn, OK | 269 | 325 | 550.0% |
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