With things like the Iron Dome and Patriot Missile System I'm certain the US has the capability to knock some number of incoming nuclear weapons out of the sky. People in rural and even suburban areas in the US will probably be fine, maybe lose a few years life expectancy due to cancers and the like.

I agree nuclear winter might not occur or not be all that impactful, however you still will have mass starvation as all supply chains will just disappear, including fuel for power plants. Cities will not be able to supply food and sustain themselves unless in very rare and specific scenarios.

One way or another not a fun place to live