| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 49°F | 34°F | 0.7" |
| February | 26°F | 52°F | 37°F | 1.2" |
| March | 37°F | 64°F | 49°F | 1.8" |
| April | 46°F | 73°F | 58°F | 3.1" |
| May | 55°F | 81°F | 67°F | 3.6" |
| June | 66°F | 92°F | 79°F | 4.5" |
| July | 70°F | 96°F | 82°F | 3.5" |
| August | 68°F | 93°F | 80°F | 3.9" |
| September | 60°F | 86°F | 72°F | 3.0" |
| October | 47°F | 75°F | 59°F | 2.0" |
| November | 35°F | 62°F | 47°F | 1.1" |
| December | 24°F | 48°F | 34°F | 1.3" |
| Index | Manchester | Oklahoma | National |
| Air quality index | 40 | 55 | 42 |
| Pollution index | 222,900 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 292 |
| Days with moderate air quality | 72 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Waldron, KS | 26 | 40 | 20.0% |
| Anthony, KS | 2,146 | 40 | 20.0% |
| Amorita, OK | 28 | 40 | 20.0% |
| Freeport, KS | 0 | 40 | 20.0% |
| Byron, OK | 27 | 40 | 20.0% |
| Manchester, OK | 85 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Anvik, AK | 85 | 31 | 38.0% |
| Truxton, AZ | 85 | 13 | 74.0% |
| Segundo, CO | 85 | 15 | 70.0% |
| Basco, IL | 85 | 29 | 42.0% |
| Sciota, IL | 85 | 29 | 42.0% |
| Manchester, OK | 85 | 40 | 20.0% |
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