A ridge of high pressure is building in out west, bringing the return of warm temperatures. Temperatures soaring past 115 could lead to heat illness toward the middle of the week.

Temperatures even in the Phoenix area will stay above average for much of the week, peaking Tuesday and Wednesday. An Extreme Heat Watch covers the area and extends into far southern California.
Long-term models suggest this might be something to get used to, however. This ridge looks to loiter around the area, and could get stronger by next weekend. The Climate Prediction Center is highlighting much of the west with above average temperartures into the middle of July.
This all comes on the heels of a warmer than normal June, which featured 18 days above average before a brief break heading into this month.
Heat safety will be a key concern going forward. Be sure to stay hydrated and keep looking in the back seat before locking the car.