If you are sweating that much below 50, then you are wearing too much. Take off the windbreaker and only wear your base layer. If that is too cold, then put on the field jacket liner. You are sweating because your body is overheating and is trying to cool off. Help it by not wearing so much. Don't wear gloves or a hat. Or don't wear anything on the upper torso, but wear gloves and a hat. Having layers is perfect. Take off if you sweat, put on if you shiver.