Anywho

I know people who still use the word “anywho” and I still have no idea what it means.
“I went to the park the other day and it started to rain…….anywho…………once it stopped, we had a good time.”
I don’t get it. They could just say, “anywhy” and it would be the same thing.
Same goes for people that say something then at the end they say, “you know what I mean.” Once I hear that I say, “no.” Don’t matter, they just keep on rambling on.
I’m waiting for somebody to use, “anywho” in a sentence then at the end say, “you know what I mean.” That’s when I’ll pounce on them. “No I don’t know what you mean and can you tell me what the hell, “anywho” means.