Probably resistors failing for the variable speed control; search "Blower Motor Resistor" for replacement info (it is easy). The SCR's sound like a banshee when they are failing.
The heater motor is failing.
The blower motor may be failing or there could be debris caught in the fan.
A loose belt. Most likely the alternator belt, if it doesn't squeal when you make a sharp turn.
These animals make many different sounds. They grunt and chirp. They even purr with a growl like sound. They are loud and vocal. They squeal a lot.
bad brakes.
Hopefully, all you need is to add some power steering fluid. The cooler temperature at night can make the fluid you have compress and accentuate its lack, and a squeal occurs when more fluid is needed.
Agressive tread, bad alignment
Yes. they open their mouth and make a loud noise that causes vibrations.
It's called feedback. The microphone causes a loop, what is coming out if the amp is being asorbed by the mic, sent back to the amp and projected again. The loop causes a squeal.
Its the sound some animals make
These creatures are very vocal. They will squeal at all kinds of things. It will not be a bad thing if it squeals like this if you know there is nothing wrong with it.
They Oink ,Grunt,and Squeal