Weather for the week of August 8th

My wife and I will be down for the week of August 8th and I am finding it difficult to find a detailed weather report. Everything I see says thunderstorms everyday. Having been there a couple times I know that this can last for 10 minutes. Does anyone know what the weather is supposed to be like or have a link that I can check to get a better idea?

Thank you!

Yahoo weather/Mexico has detailed forecasts for virtually every city in Mexico.

Bet ya it will be hot and humid with a chance of rain. Been there during that time x3 and have never had a rain out day. The weather will do what it wants so make the best of it.