During this time of year we often have fog in the San Joaquin Valley.
I also tend to use the country roads when it is foggy. There is a lot less traffic and it is not moving as fast as on the Interstate. However, you still have to be careful as there are crossroads and slow moving farm equipment at times.
This evening on my way home from the grocery store I drove through some fog, so I hope it will not be too bad in the morning.
Be careful out there.