I have a 2005 Toyota Corolla with squeaking from brakes.
Very High Pitched
Worse when wet / rainy
Only happens within certain peddle range (stops if I press soft or real hard)
Steadily goes away while driving (but restarts after parking for a while)
Pads are good, they have over half the pad left
I tried the anti-break squeal stuff on the back of the pad, no help at all