Interesting topic as it pertains to me as well. Car squeaks when temps fall below 40 degrees here in Connecticut. I have two speed bumps to drive over on the way out of my complex. Front and rear squeaks. Pretty embarrassing for a 50k car. Stock suspension. Funny thing is that it didn't do it the first winter I had the car.
Not even worth a trip to the dealer. Winter is winding down. Lease is up in October.......