Seattle to LA on Highway 101

I am going to Palm Springs from Seattle leaving Dec 10. I will be pulling a 34ft fifth wheel. I am concerned about the snow in the mountains going down I-5..I have been told
that I could bypass the snow by going down 10l. Need some
input from people that have traveled 10l in the winter.

Don,
That information is basically correct. The liklihood of snow on 101 is very unlikely. However, heavy rain and fog is very possible in Washington and Oregon.

I-5 may have some snow but it is much faster and driving in snow is really not that bad.

Don't worry,

Mark