Hi folks..I forgot to add.
On my feet I was wearing a thin summer half sock and on top of that a VERY thick wool sock. I was wearing an exeter winter cycling boots wrapped in a water proof shoe cover. I do have a medium wool sock but I couldn't find it, so I wore the very thick ones. My feet were very tight and I had no room to move because of the thickness of the sock.
I do have clipless pedals on my summer bike, but this winter beater just has regular pedals and I do not intend to add any clips to it. Im not sure if I was doing 12km/hr, but that sounds about right. I certainly was not going my fastest as the bike was sluggish and slow. A small hill for example that I always clear had me stopped dead in my tracks halfway up it. Im the snow did not help.
Im not fond of riding without a windbreaker, BUT I will change my clothing for the ride home and see if that changes anything.
Maybe the showerspass is to windresistent? Is it a bad choice to wear?
I thought since the inside of the jacket was damp, that my sweat was being 'wicked' away from my body to the outer shell.
Thanks for all the suggestions.