I was surprised yesterday. It was 98 in Cleveland and I did my club ride. The heat was not bad. It was a flat ride.
http://connect.garmin.com/activity/200420653
Two Sundays ago I tried to do a 100 miles. Temp was 80 at the start 90 by 11am. I drank a ton of gaterade and took sports legs. By mile 65 I was cramping so bad I had to call the sag wagon. Our ave was 18.2. I should have gone slower. I drank 8 bottles that day and still lost 7lbs.