| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 27°F | 2.9" |
| February | 25°F | 45°F | 38°F | 1.0" |
| March | 34°F | 55°F | 47°F | 1.6" |
| April | 40°F | 60°F | 53°F | 3.0" |
| May | 52°F | 72°F | 64°F | 1.2" |
| June | 66°F | 87°F | 79°F | 6.1" |
| July | 73°F | 96°F | 87°F | 0.3" |
| August | 66°F | 91°F | 82°F | 1.3" |
| September | 52°F | 81°F | 70°F | 1.1" |
| October | 37°F | 62°F | 52°F | 1.9" |
| November | 30°F | 53°F | 45°F | 2.7" |
| December | 18°F | 38°F | 31°F | 2.3" |
| Index | Vernon | Utah | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 17,030,300 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 253 |
| Days with moderate air quality | 111 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.280% |
| Benzene | 0.230% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.360% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Vernon, UT | 358 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Vinegar Bend, AL | 358 | 42 | 16.0% |
| Donaldson, AR | 358 | 32 | 36.0% |
| Evening Shade, AR | 358 | 36 | 28.0% |
| Pierson, IA | 358 | 35 | 30.0% |
| Loda, IL | 358 | 42 | 16.0% |
| Vernon, UT | 358 | 46 | 8.0% |