Though riding in high heat is not ideal, sometimes I get stuck out on the road when the temperature rises. I'm the type of rider whose entire head turns beet red when I exert myself; people think I'm having an embolism or something. My cure: I take LOTS of water and use at least half of it to pour over my head periodically throughout my ride. I put the spout of my bottle through the vents in my helmet, tilt my head back and squeeze away! It seems to cool my core temp for awhile. But I try not to stay out in high temps any longer than I need to. Kudos to you for not letting the heat stall your riding!