<font color=navy>I agree. Although July can get really hot sometimes, it's only really bad for a few hours at its worst.
Lines can get really crowded, especially at the most popular attractions, but with good planning, you can see everything.
Go early & get those Fantasyland rides out of the way
Get those Fastpasses (Splash Mtn runs out the quickest, so get that first)
Relax during midday, when the crowds are at their biggest
* Golden Horseshoe is a good choice for lunch & a show, or go to Innoventions - cool in there, or go to California Adventure - Animation Studio & play in there awhile. You can also have lunch in the Blue Bayou (make priority seating arrangements), or see a movie at Downtown Disney
* or go swimming at your hotel
Go back to the parks when the day is cooler 4pm or so, or even later - the crowds are more bearable then, and you'll feel refreshed after kicking back.