Again about squeaky windscreen

[ach]

To those who had/have this notorious squeak... Did you notice that this sound becomes louder in hot weather?
I do not hear any noise from the area of windscreen until the car's surface becomes hot. Than I start to hear some noise that I can describe as soft "scratching". It definitely comes from the windscreen area. When car cools the sound disappears

 

[clyde]

Yeah, it is very dependent on the weather. I tend not to notice it too much in the winter but hot days can be really bad. My theory is that the faster you drive the more cooler air there is hitting the screen and, therefore, less squeeks [].