When temps start to drop and I begin bracing myself for winter riding, I always start wearing my long cycling pants a little too early. I end up overheating for a few days and return to cycling shorts soon thereafter. I have found that in terms of covering up in the Fall, my legs are the last thing that need it. I need gloves (or socks) for my fingers, a jacket and something around my neck long before I need pants.
A couple of days ago while I rode in to work, I determined that the temperature was about as cold as I like to go without long pants. In an effort to stop being subjective about the weather and provide a benchmark for Fall pants wearing, I went straight to the Weather on my computer upon my arrival at the office. My personal cutoff for shorts is 4 deg C or 39 deg F. Anything colder and I'll wear pants. When next Fall rolls around, I'll be able to refer to this page for a reminder about when I should make the switch, and so avoid those overheating days.
What's your cut off? Do you just stroll outside and feel the weather, or do you have a Temperature scale like I do now?
R A N T W I C K