| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 28°F | 49°F | 37°F | 2.9" |
| February | 31°F | 50°F | 39°F | 2.1" |
| March | 40°F | 63°F | 50°F | 4.9" |
| April | 48°F | 70°F | 58°F | 5.0" |
| May | 57°F | 77°F | 66°F | 5.3" |
| June | 66°F | 86°F | 75°F | 3.7" |
| July | 68°F | 88°F | 77°F | 5.2" |
| August | 68°F | 89°F | 78°F | 3.4" |
| September | 60°F | 81°F | 69°F | 6.5" |
| October | 49°F | 70°F | 58°F | 5.1" |
| November | 40°F | 62°F | 50°F | 3.0" |
| December | 30°F | 49°F | 38°F | 3.4" |
| Index | Oak Grove | Arkansas | National |
| Air quality index | 18 | 38 | 42 |
| Pollution index | 2,364,230 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 60 |
| Days with good air quality | 58 |
| Days with moderate air quality | 2 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Blue Eye, MO | 378 | 18 | 64.0% |
| Hollister, MO | 4,564 | 18 | 64.0% |
| Kimberling City, MO | 2,711 | 18 | 64.0% |
| Coney Island, MO | 51 | 18 | 64.0% |
| Shell Knob, MO | 1,306 | 18 | 64.0% |
| Oak Grove, AR | 432 | 18 | 64.0% |
| City | Population | Air Quality Index | National Avg. |
| Pioneer, LA | 432 | 34 | 32.0% |
| Kellogg, MN | 432 | 15 | 70.0% |
| Freeville, NY | 432 | 34 | 32.0% |
| Phillipsburg, OH | 432 | 47 | 6.0% |
| Drummond, OK | 432 | 40 | 20.0% |
| Oak Grove, AR | 432 | 18 | 64.0% |
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