A cloud in a dream often reflects something not yet clear -- thoughts, plans, or feelings still obscured, waiting for more information before they resolve into a clearer shape. Watching clouds part can mirror a transition toward understanding, while an unbroken overcast sky may name uncertainty that's lingered longer than you'd like.
There will neither good or evil be performed, but when the good or bad planets in a nativity or revolution shall aspect the Moon by a quadrate. - William Lilly (1602.-1681.)