Around 11:30 this morning I was out in the backyard taking another set of temperature measurements in the snow and freezing my toes at the same time. The temperature on the surface of snow was varying from -3.3 to -5.1°C.
Then I noticed something tiny moving—very slowly—on the snow. It was a 3-mm long spider.
After taking its pictures, I picked it up and moved it to a sunny spot on a nearby tree. What on earth was it doing on the snow?
I posted this picture on BugGuide.net and within minutes it got identified tentatively as a running crab spider (Philodromidae) and more specifically as a Philodromus sp.