Oh my. I would wear 2 if I was dressing up and desired two shirts but 50 degrees is still shorts weather to me. I don't know that I have a limit. I enjoy the cold. The only thing I don't like about winter is baseball and golf season being over along with not being able to work on my lawn anymore. As for the weather itself, I guess it would be in the teens. This is assuming the wind isn't outrageous. Hell if I am just running out to pick up pizza or something I might just go out in shorts no matter the temp if its just for a minute.

50 degrees is like flirting with the devil

Single digits although if it's windy anything below freezing.... and Kansas.

I'm cool enough on my own.

The last time I was in San Diego I was walking around in my orange Broncos gear, interacting with the locals. I've got some old home movies that my Navy buddy took of it. I posted them on YouTube. Here's one:

<iframe width="420" height="315" src="http://www.youtube.com/embed/_UFb0r9_64I" frameborder="0" allowfullscreen></iframe>

42

The answer to everything is 42.

I was only there for one day. Flew in around 11. Took a bus out to some neighborhood near the ocean. I think it was a college area. Drank at a bar there. Went and slept on a bench in that old Mexican town area. Then went to the Gaslamp area and had a few more drinks. Then went to some little bar called the Live Wire on El Cajon and had a few more.
It's a fun town.

I honestly dont get too cold. Its never bothered me. And I work out in it mostly, so no big deal.

Low single digits or below is when it starts to suck.

Anything below 30 tends to affect my decision making about going out or staying inside.

I'm fine all the way down to 0 unless it is windy then around 20.

I don't really complain about the cold. I don't really enjoy it when it's below freezing, but aside from that...whatever.

Heat bugs the shit out of me. I start whining about the heat any time it gets above 85 or so.

I'm right there with ya. You can dress for the cold but you can only take so many clothes off. Anything above 78 and I am uncomfortable.

You have adapted to the Denver climate which I miss greatly since moving back to Texas.

Texas would be waaaaay too ****ing hot