I agree that it is partly what you are used to, and partly what your body can handle.

When I was born, it was -27F. In general, I prefer cool temps to hot ones. That said, when I lived and rode in NC, I was ok riding at 95 degrees and often rode when it was significantly hotter. But, if we didn't ride in those temps, we didn't ride most of the summer.

We've only been here a year and I have quickly gone back to my cold-loving ways! This heat is positively wilting me (like the delicate flower that I am *snort*)! Seriously, last summer we were laughing at those who wouldn't ride when it was 90. Last week, I had a serious health problem when riding in those same 90+ temps.

It is forecast to be well over 100 degrees a couple of days this week. I will not be out on my bike. Besides, why should we ride when it's this hot if it only happens a couple of days out of the summer? All we have to do is wait a couple of days to see cooler temps (unless of course, you have an organized ride). If all we had was 90+ temps all summer, we'd all learn to ride in the heat too.