Hey man this could be many things from your breaks, to your wheels, to your suspension to an engine belt. Since there arent many sensors monitering these. The faster you drive a car the more pressure is put on the suspension because it is sucked lower and lower to the ground. Your best bet is taking it to the dealer, and and ask them to look at it but changing the speed to around 65 because you dont want them saying that it could be an issue caused by your driving. You would rather it be a manufactures fault so you dont have to pay for it. What ever the issue is just keep it slow untill you get it checked out because squeeking means rubbing or grindind and you will only make it worse. Oh one last thing if it sounds like the squeking is non consistent then (suspension) if it is consistent meaning getting faster and faster then thats your(wheels) or a (Fan or engine belt heating up). Cold weather will always make little issues more noticable.