I would not say "GO FOR IT!" but I would say, go up there and get your toes wet. See what it is like with an eye on your escape.  
My primary concern would be the 45mph winds at the summit. They could be just as strong lower down and you could find yourself in a screaming whiteout. Or they could be worse than that. This would be a good time for liberal use of wands and GPS. 
And, since the cold front is moving in Sat,you could have clear skies in the AM that turn into a fierce linticular in the afternoon. 
But most likely it will just hammer you at Muir.