A/C Suction Line Sweating?

The Vintage Air system on my car seems to be working Ok, blowing 42 degrees at the middle vent when it is in the 80's outside. When running, the suction line going to the compressor is sweating and is really cold. Is that normal?

Yes, it’s normal.

What I didn’t care for was the condensation drain dumping right onto my hedders.
I extended the drain tube with 3/8 vacuum tubing and ran it down next to the frame rail.