I havent biked in cold weather yet, but I do alot of running and other PT in the cold, even snow/ice season. If you normally sweat, you will sweat no matter what. You will count on your body heating you up, the only thing you can do is adjust what you wear like some form of combination of wick clothing. They'll let your body breathe which will remove sweat at the same time. They also make jackets out of the stuff. What makes it great is that even though it removes sweat and lets your body breathe, it wont let anymore heat out than a regular jacket. How much you put on is up to you.

For me, on a very active cold snowing morning, im usually just in a wick long sleeve T-shirt and either long pants or shorts even depending on what I'm doing. Wick material clothing can get expensive so its up to you on which brand/kind you buy. Honestly I have the low and high-brands, they both work. Just dont get the, "I got this at a flea market" brand type ;].

Good luck my friend.