Mid 30s this am. It is starting to get light for ~ the last 2 miles of my commute. My rear derailleur has been creaking and getting progressively worse over the last week, so I converted my commuter to fixed gear last night when I got home (easy job because I still have everything from when I used to have it set up as a fixie). It was supposed to be temporary until I rebuild or replace my RD, but I had so much fun riding fix this morning that I might just ride it through the spring.