Also, don't wear thick socks during the summer. It looks like summer is here. This summer seems to be a hot one. On the clothing side, wear breathable materials that aren't made of cotton. It is very important to have air flowing across your skin to help evaporation.
Light colors are also very helpful at reflecting heat.
It will take the magic 15 workouts before you will feel more comfortable with the heat. Also, if possible, run in the morning and evening. If you are wanting to get ready for fall marathons, go to our front page and get more info. We have two marathon programs to help get you through the summer safely and ready for the Fall. The two main coaches are Andreas and Mixon.