It's too hot! Do you think this idea will work?

I live in a 3 bedroom house and have window units in 2 bedrooms (my kids') and the living room. Nothing in my bedroom and I don't want to run them all night anyway. My electric bill would skyrocket! I was wondering if running a humidifier in our rooms at night and turning on the ceiling fan full speed to try and circulate the mist would help cool down the room. Has anyone tried this? Do you think this will work?