Quoted By:
Northern WI here. Warm NON COTTON base layer (I use a thermal) + any down jacket+ something waterproof will keep you as warm as you want. Throw in a scarf and a hat if it's windy.
As for the legs and feet tall merino wool socks and furry tights. I haven't used long johns in years after I found these. Pic related, only waterproof shell not pictured because it's in my car.