There is no way to get around the fact that it's HOT in the Valley of the Sun now.
But we are smart people so here are some ways to be able to enjoy your craft while staying cool.
#1: Knit under water. Warning this could cause felting.
#2: Add cooling fans to your needles or hooks. These are small and very portable.
#3: Have a large block of ice delivered and climb on top to knit.
#4: Look for a cool public place to knit or crochet.