| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 63°F | 49°F | 8.3" |
| February | 42°F | 67°F | 54°F | 5.2" |
| March | 50°F | 75°F | 61°F | 5.7" |
| April | 57°F | 80°F | 67°F | 9.4" |
| May | 62°F | 86°F | 73°F | 10.2" |
| June | 70°F | 90°F | 78°F | 6.3" |
| July | 71°F | 95°F | 81°F | 6.9" |
| August | 71°F | 92°F | 80°F | 6.4" |
| September | 68°F | 88°F | 76°F | 21.8" |
| October | 56°F | 80°F | 66°F | 4.4" |
| November | 48°F | 73°F | 59°F | 20.7" |
| December | 48°F | 69°F | 57°F | 6.1" |
| Index | Vernon | Florida | National |
| Air quality index | 38 | 35 | 42 |
| Pollution index | 3,341,080 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 357 |
| Days with good air quality | 308 |
| Days with moderate air quality | 49 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.460% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Bonifay, FL | 2,697 | 35 | 30.0% |
| Caryville, FL | 251 | 35 | 30.0% |
| Westville, FL | 338 | 35 | 30.0% |
| Chipley, FL | 3,590 | 35 | 30.0% |
| Ponce de Leon, FL | 687 | 38 | 24.0% |
| Vernon, FL | 634 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Fuller Acres, CA | 634 | 67 | 34.0% |
| Toomsboro, GA | 634 | 38 | 24.0% |
| Doon, IA | 634 | 36 | 28.0% |
| Ririe, ID | 634 | 43 | 14.0% |
| Altona, IL | 634 | 46 | 8.0% |
| Vernon, FL | 634 | 38 | 24.0% |
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