I was supposed to run for 25 minutes, but I thought I'd take it easy by just walking. It went pretty well, and I think Thursday I will run. Yay!! After all the pain I felt for the past month and then being forced to take a break last week, walking without pain or limping was really nice.
In the spirit of the heat and humidity, check this article out about staying hydrated on your runs. I've read conflicting information about the whole "weigh your water loss post-run" thing, but it certainly can't hurt to drink as much water as it suggests. Just remember to drink some sports drinks too if your run is super long.