It amazes me how sensitive I am to the difference between 66°F/19°C and 70°F/21°C. It's the difference between "I'd sure be a lot more comfortable with long sleeves" and "omg I can't take off enough clothes"

@timapple nope nope no thanks. I had my share of 110+F weather in Portland this summer.

@aaronpk I feel you, 20°C is my cutoff point where anything above makes me miserable.