Why is the side walk on this side bone dry, and on the other side snow from 48 or so hrs ago?

Sunlight blocked on other side?

Wind and sunshine.

In the northern hemisphere the folks on the North side of the road get the best deal. The sun hits it.

Drifting during the snowfall. I used to clear sidewalks for rental properties years back and the front of the buildings would have 2’ drifts and the backs had a dusting. Come high noon the back was dry as a bone and the fronts required rock salt to help melt away the slush. Same thing happens with Fall leaves. I never have any on my front lawn and my neighbors across the street are waist deep in leaves they have to rake to the curb.

I would guess the clear sidewalks are on the north or northerly side of the street, and the snow-covered walks are on the southerly side, probably in the shadow of fences or buildings.

Okay. I don’t think there has been wind to speak of during or after the snow.

Hasn’t it been long enough (48 hrs or so) for the sun to hit all sides? By the way all the buildings are regular small homes nothing to block the sun.