We paint 16 projects a year while it is raining,when rain is in the forcast we jump off the ext job and start one of the interiors that is lined up.
So go ahead paint to your hearts content.
You might notice a slightly slower dry - but unless you paint often this is unlikely.
The only time you can have issues with this is when you spraying clear lacquer on wood. Excess humidity can make it blush (turn cloudy white) even in a sealed home.
Since you aren't spraying any lacquer (I assume anyway)..Paint away!!!!