Cool 3C with about 10kmh breeze, rained all night so roads were wet but it didn't rain on my commute. Decided to go for it and wore much lighter clothing because I was so hot going home last night: shorts without tights, short nylon socks not long wool ones, long sleeved jersey not insulating base layer and rainshell. I was perfectly fine once I got a couple of kms underway and was warmed up. In case it was going to be wet, I put a set of vinyl gloves (the ones used by custodial staff) over my full-fingered cycling gloves to keep my hands dry: didn't need the protection against water but it seemed to provide a little extra warmth, wind proof and all.
However, slowest commute ever: got a flat about 1/2 way so I had to replace the tube, I'll patch it tonight.