| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 56°F | 43°F | 1.9" |
| February | 36°F | 60°F | 46°F | 1.8" |
| March | 46°F | 69°F | 56°F | 2.7" |
| April | 53°F | 76°F | 63°F | 3.4" |
| May | 61°F | 82°F | 71°F | 6.0" |
| June | 70°F | 91°F | 80°F | 3.8" |
| July | 73°F | 95°F | 83°F | 2.9" |
| August | 73°F | 96°F | 84°F | 2.2" |
| September | 65°F | 88°F | 76°F | 1.7" |
| October | 54°F | 78°F | 65°F | 2.2" |
| November | 44°F | 67°F | 54°F | 2.1" |
| December | 35°F | 56°F | 44°F | 2.2" |
| Index | Marietta | Oklahoma | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 449,976 | 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 | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Lebanon, OK | 253 | 43 | 14.0% |
| Marietta CDP, OK | 149 | 43 | 14.0% |
| Thackerville, OK | 400 | 43 | 14.0% |
| Burneyville, OK | 743 | 43 | 14.0% |
| Marietta, OK | 2,746 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Meeker, CO | 2,745 | 44 | 12.0% |
| Santa Rosa, TX | 2,745 | 42 | 16.0% |
| Greenwich, NJ | 2,747 | 51 | 2.0% |
| Thermopolis, WY | 2,747 | 45 | 10.0% |
| Norway, MI | 2,744 | 36 | 28.0% |
| Marietta, OK | 2,746 | 43 | 14.0% |
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