It's cold! Frigid even, 23 degrees with a gusting wind. Treadmill weather? Not necessarily.
I never run inside, so that makes it easy for me. Unless it's icy-treacherous underfoot, I'll be running outside.
The secret to running in the cold is thin layering. Compression shorts and polyester warm-up pants take care of your lowers, along with polyester socks and good running shoes of course. Tights and long trunks work too.
The uppers should be all-polyester items (a little nylon or spandex for "grab ability" is okay). Go to Target and stock up for under $20 per item. Or Walmart for a dollar or two less. These are not pretty running togs, just cheap and effective.
Today I wore a tank top, a short sleeve t-shirt, a long sleeve shirt and a nylon wind shirt. I took off the wind-shirt and tied it around my waist when I got hot.
I also wore polyester gloves and a stretchy thin polyester headband that I pulled down around my neck for a loose neck warmer when my ears got hot. I wore my small waist pack with my camera, money, a fare card, a GU packet and a small tube of Vaseline stuffed inside. I carried my half-liter water bottle. When my hands got hot, I hung my gloves on my waist pack belt.
I would have added a polyester scarf (go to Old Navy), a polyester fleece zip-up (22 bucks at Target) and a polyester mesh ball cap if it had been really frigid and windy.
What I have described is actually not that much stuff. I keep it all isolated on a shelf on which I keep only running gear. I also have a yard-sale dresser dedicated to my various sizes and types of running shirts, shorts, leggings, sox etc. I call it the Polyesser. I can be out the door in 5 minutes with a stop at my Polyesser and shelf.