No pop up canopies are constructed to stand up to sleet or snow. Most are also only water resistant, not waterproof.
The only actually water proof canopy we have is the Vitabri canopy
We also carry a canopy package that has thicker side walls than most package deals. It is the UnderCover 10x10 R-2 Aluminum Frame Instant Canopy with CRS Enclosure
. The sides are made of the same 300 denier polyester as the top.