Warm enough to wear just the spring jacket (brown corduroy) and actually take my time instead of rushing all over the place. I even took a pic of my bike (will post in the pics of commuter thread) cuz it was still light out even though the sun went and hid behind some clouds. The ride home was fast at some points and leisurely at others and I was happy for running a front brake on the fixie when I had to ride down a short, steep downhill that ended at a red light.