That was the temp during my noontime run today. With the wind, which is considerable today, the windchill was likely below zero. Fortunately our household thermometer doesn't measure that. Cold weather running isn't bad as long as you're dressed for it. For the record, today that meant wool socks, four top layers of various fabrics, two pairs of tights, windproof mittens, fleece hat, and fleece neckwarmer. My feet were the only part of me that ever really got cold, but they warmed up after the first 20 minutes or so.
Why run in this weather? Because I'm stupid enough to feel morally superior when I do. Because Sundays are running days. Because it will be even colder at my parents' place this week. Because I love the horrified looks I get from people driving by in cars. Because I had some stuff to shake off. Because the last five weeks of the semester were more intense than I had expected they would be. Because I like the squeak-crunch of icy snow. Because a solo run in cold weather is a great time to talk to Joe (sometimes he even answers).
Because it's good for me. That's why.