| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 31°F | 21°F | 0.4" |
| February | 16°F | 33°F | 24°F | 0.4" |
| March | 23°F | 43°F | 32°F | 0.5" |
| April | 28°F | 52°F | 39°F | 0.9" |
| May | 36°F | 62°F | 48°F | 1.9" |
| June | 45°F | 75°F | 60°F | 0.8" |
| July | 53°F | 84°F | 68°F | 0.5" |
| August | 51°F | 82°F | 66°F | 0.9" |
| September | 43°F | 72°F | 56°F | 1.3" |
| October | 33°F | 58°F | 44°F | 0.9" |
| November | 23°F | 45°F | 33°F | 0.5" |
| December | 14°F | 31°F | 22°F | 0.4" |
| Index | Randolph | Utah | National |
| Air quality index | 44 | 45 | 42 |
| Pollution index | 641,359 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 315 |
| Days with moderate air quality | 49 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Garden, UT | 247 | 44 | 12.0% |
| Laketown, UT | 262 | 44 | 12.0% |
| Woodruff, UT | 285 | 44 | 12.0% |
| Randolph, UT | 968 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Minkler, CA | 968 | 60 | 20.0% |
| Gladbrook, IA | 968 | 39 | 22.0% |
| Swayzee, IN | 968 | 37 | 26.0% |
| Inez, KY | 968 | 42 | 16.0% |
| Lake Shore, MN | 968 | 29 | 42.0% |
| Randolph, UT | 968 | 44 | 12.0% |
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