Answer: T-shirt, long sleeve lightweight fleece top, lightweight snowpants, lightweight mittens and snow boots. He was sweaty but he ran himself into exhaustion. Yahoo!
And look what I discovered:
And the temperature today (upper left hand corner):
This is even in the afternoon, after the sun went behind clouds. I think it was warmer earlier.
I am so done with winter. Unfortunately, due to the complete lack of any birds (besides crows) in my back yard, I thinking that winter isn't done with me.