Driver and passenger front windows will not roll up or down

Hi and thanks in advance. Experiencing multiple electrical issues. The lift gate will not go up or down (motor is silent, the arm has not come unhooked/unpinned), the driver and passenger front windows will not roll up or down (dome lights do not dim, do not believe motors are the issue), the unlock/lock button on driver door does not function (the key fob unlocks the doors), the heater does not work (air blows, no hot air comes when engine at temperature). All of these issues, to me, point to an electrical issue, and here is the kicker: After a week of no rain here in humid Houston, everything in the vehicle worked, miraculously, for one day. Any suggestions are more than welcome at this point.