The only thing I remember from what ive seen while ive been there is once they canceled Fantasmic because of lightning. I would imagine the same would be true of any of the outdoor shows since the way the seats are made can't operate with lighting since if it strikes you could get hit. So I'm guessing if there is lighting in the area Lights, Motors, Action!, Indiana Jones, and Fantasmic would be closed. Although even when there is rain and T-Storms expected they usually don't last all that long.
Have a great trip!