Fog after Frost.
Fog after hard frosts and fog after mild weather indicate a change in weather.
Falling Fog.
When the fog falls fair weather follows; when it rises rain follows.
Heavy Fog.
Heavy fog in winter, when it hangs below trees, is followed by rain.
Hunting and Fishing.
When the fog goes up the mountains you may go hunting; when it comes down the mountain you may go fishing. In the former case it will be fair; in the latter it will rain.
Light Fog.
Light fog passing under sun from south to north in the morning indicates rain in twenty-four or forty-eight hours.