| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 28°F | 49°F | 37°F | 1.9" |
| February | 30°F | 51°F | 39°F | 2.0" |
| March | 40°F | 64°F | 51°F | 3.8" |
| April | 49°F | 73°F | 60°F | 5.2" |
| May | 57°F | 78°F | 67°F | 5.3" |
| June | 66°F | 87°F | 76°F | 2.9" |
| July | 69°F | 90°F | 78°F | 4.2" |
| August | 68°F | 89°F | 78°F | 3.3" |
| September | 60°F | 82°F | 70°F | 2.9" |
| October | 49°F | 72°F | 59°F | 3.0" |
| November | 40°F | 61°F | 49°F | 2.6" |
| December | 31°F | 50°F | 40°F | 3.0" |
| Index | Viola | Arkansas | National |
| Air quality index | 36 | 38 | 42 |
| Pollution index | 1,415,520 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 347 |
| Days with moderate air quality | 18 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Horseshoe Bend, AR | 2,692 | 36 | 28.0% |
| Oxford, AR | 694 | 36 | 28.0% |
| Bakersfield, MO | 284 | 36 | 28.0% |
| Viola, AR | 295 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Colony, AL | 295 | 53 | 6.0% |
| Dyess, AR | 295 | 45 | 10.0% |
| Canby, CA | 295 | 29 | 42.0% |
| Grenada, CA | 295 | 36 | 28.0% |
| Tall Timber, CO | 295 | 47 | 6.0% |
| Viola, AR | 295 | 36 | 28.0% |
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