It's all what you're acclimated to. Let's not let this turn into another one of the p*ssing contests like "my weather and my hills are bad, and yours aren't."

I like heat, and the one summer I spent in Florida, I didn't hesitate to go running at noon when it was 90-95°F. Shades of "mad dogs and Englishmen;" if the natives did their workouts outdoors at all, they'd go in the early morning or after sundown.

But the weather has been so cool here this year that on the two or three times the temperatures have topped 85°F, everyone's really suffered.

To give you an idea - "normal" temps for this time of year would be daytime highs of 85 most days. As it is, with the changing climate, no one knows what "normal" is any more. I've ridden in long-sleeved jerseys three times this past month, and when I did my laundry yesterday, there were two long-sleeved wool base layers in the load. We haven't turned our AC on since 2007 (hope it still works!).

Riding in temperatures you're not acclimated to is dangerous and requires care, period, whether that temperature is 115°F or 85°F.