John,
Know both your problem and the round top area well.
First, what type of breaker do you have & where does it reside? Since Fayette County does not have code in your area, you don't have to have a 20amp DB GFCI breaker, but you should have one. The really foggy, sticky, windless days can trip GFCI breakers, especially if the breaker is not fully insulated from the ambient conditions.
If you do not have a GFCI breaker, then you need to check your motor housing to see if it's tightly sealed. If you do have a GFCI breaker, what is the brand and how old is it? It's probably a Siemens or Pentair [seimens renamed]
More than likely the dense fog is tripping your GFCI breaker...I have a place in Colorado County and its so foggy/sticky sometimes that you can hear the power lines buzzing.
Post back the info - tstex