Why does fog form most often on autumn and winter nights?
The months of October and November are the foggiest months, but even winter has a lot of fog. During Autumn, the ground heats up during the day then cools quickly at night, making prime conditions for fog. Overall, the nights of autumn and winter are long and the long periods of cooling make it more likely for fog to form.
Copyright © 1997 Kathy A. Miles and Charles F. Peters II