Kirsten, I find putting a cold face cloth around the back of my neck helps a lot. Also, I fill up a water bottle, a little less than half way with water and then put it in the freezer at night and in the morning fill the rest of the bottle up with water. This way you have some nice ice water to help cool you down and keep you hydrated.

So far, here in Montreal, we have been having below normal temperatures, which I am not complaining about at all. I hate the heat.