NWS Forecast Office Phoenix, AZ

Strong high pressure will continue over the region over the next few days with well-above normal temperatures and the potential for breaking daily records. The well-above normal temperatures will result in widespread Major to Extreme HeatRisk through Saturday with Extreme Heat Warnings in effect through 8pm MST/PDT Saturday. Temperatures "cool-off" to near to slightly above normal on Sunday and then near to slightly below normal on Monday.

An unseasonably strong ridge of high pressure will continue to promote well above normal, potentially record setting temps, and mostly dry conditions through the rest of this week. The pattern will finally shift by this weekend as the ridge weakens and moves eastward while a disturbance sets up over the West Coat. This pattern shift will promote better moisture and storm chances as well as cooler temperatures for the region.

Heat can escalate quickly. Make sure to drink plenty of water and electrolytes and wear loose-fitting light-colored clothes. Stay indoors in air conditioning as much as possible, especially during the afternoons. If you have to be outside take frequent breaks in the shade. Never leave people or pets alone in a closed car. Don't underestimate the heat, it's the deadliest weather hazard.