| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 55°F | 41°F | 4.9" |
| February | 33°F | 59°F | 45°F | 4.5" |
| March | 44°F | 69°F | 55°F | 7.1" |
| April | 51°F | 77°F | 63°F | 8.9" |
| May | 60°F | 83°F | 71°F | 10.5" |
| June | 70°F | 92°F | 81°F | 11.4" |
| July | 73°F | 96°F | 85°F | 8.1" |
| August | 72°F | 96°F | 84°F | 9.3" |
| September | 64°F | 88°F | 75°F | 10.7" |
| October | 52°F | 78°F | 64°F | 8.5" |
| November | 41°F | 66°F | 52°F | 7.5" |
| December | 31°F | 54°F | 41°F | 6.1" |
| Index | Fletcher | Oklahoma | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 1,343,540 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 285 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| 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% |
| Central High, OK | 1,507 | 43 | 14.0% |
| Norge, OK | 180 | 43 | 14.0% |
| Elgin, OK | 3,137 | 43 | 14.0% |
| Lawton, OK | 93,535 | 43 | 14.0% |
| Fletcher, OK | 986 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Waddington, NY | 986 | 0 | 100.0% |
| Whitewood, SD | 986 | 44 | 12.0% |
| Gainesboro, TN | 986 | 25 | 50.0% |
| Holiday Lakes, TX | 986 | 52 | 4.0% |
| Hayneville, AL | 985 | 52 | 4.0% |
| Fletcher, OK | 986 | 43 | 14.0% |
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