What I don't love is trying to figure out what to wear for early morning runs, when the temps can range from the 30s (F) to the low 50s.
You think I would know by now, but I don't.
Lucky for me, I have this handy-dandy temperature chart (Excel file), from a post on dressing for winter running by blogger Joe Ely, over at my old pasttime, CompleteRunning.com.
The chart tells you what you need to wear for temps ranging from 63F to <10F. Of course you can customize it to suit your preferences, but I think Joe pretty much nailed it.
I downloaded this chart when it was first posted back in 2006, and it has saved me from having to think many times over.
And that my friends, is always a good thing.
Hope it helps you.