Originally Posted by
Machka
Where you live ... is it too hot to cycle?
What's your cut off point when it comes to heat?
Heat isn't the problem it is heat and humidity/dewpoint.
On heat-warning days, you can still get miles in...so long as you are prepared to be on the bike before civil-dawn, and get miles in before daytime heating makes it worse. dawn is better than dusk, as it can still be dangerously hot/humid far past astronomical-sunset
Most of May/June it was about 100F ambient and 75F+ dewpoint. Still rode---but I was on my bike, riding by, 0530.