Telecommute today. Yesterday I left for work at about 11 am, pedaling through our weird mid-summer weather (in the 80s F) on my new narrower tires (35 cm, down from 40 on my hybrid). Fun--consistently one gear higher than before. I should really put a new battery in my cyclo-computer. When it came time to turn for the subway station I just kept going and rode all the way in (20 miles?). It's a good thing the students sit about 10 feet away from my steamy self in class.
Then, even with temps around 90 during the day, the days are so short that by the time I head home from my night class it's more like 65 and dropping. Not cold by my midwestern childhood standards, but it does pose a wardrobe problem.