| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 42°F | 4.8" |
| February | 35°F | 57°F | 45°F | 3.2" |
| March | 44°F | 67°F | 54°F | 4.5" |
| April | 51°F | 76°F | 63°F | 4.9" |
| May | 59°F | 82°F | 70°F | 4.3" |
| June | 67°F | 91°F | 78°F | 4.2" |
| July | 70°F | 92°F | 80°F | 5.3" |
| August | 69°F | 92°F | 79°F | 4.5" |
| September | 62°F | 86°F | 73°F | 3.8" |
| October | 50°F | 76°F | 62°F | 3.9" |
| November | 40°F | 65°F | 52°F | 3.6" |
| December | 36°F | 56°F | 45°F | 5.6" |
| Index | Olivet | Tennessee | National |
| Air quality index | 37 | 76 | 42 |
| Pollution index | 321,318 | 2,454,916 | 2,726,193 |
| Measurement | Total |
| Days measured | 263 |
| Days with good air quality | 252 |
| Days with moderate air quality | 11 |
| 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. |
| Adamsville, TN | 2,120 | 27 | 46.0% |
| Crump, TN | 1,634 | 27 | 46.0% |
| Saltillo, TN | 652 | 27 | 46.0% |
| Milledgeville, TN | 298 | 27 | 46.0% |
| Stantonville, TN | 392 | 27 | 46.0% |
| Olivet, TN | 1,599 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Maple Park, IL | 1,599 | 42 | 16.0% |
| Saranac, MI | 1,599 | 38 | 24.0% |
| Nissequogue, NY | 1,599 | 43 | 14.0% |
| Sneedville, TN | 1,599 | 44 | 12.0% |
| Warsaw, IL | 1,600 | 29 | 42.0% |
| Olivet, TN | 1,599 | 37 | 26.0% |
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