Strong high pressure over the Desert Southwest will lead to abnormally hot temperatures through the week with temperatures up to 5-7°F above average and Major HeatRisk across the lower deserts. An Extreme Heat Warning is in effect through Friday for the lower deserts of AZ and southeast CA along with the San Carlos area in southern Gila County.
Afternoon highs across the lower deserts will reach or exceed 110°F, several degrees above daily normals, through the weekend. Overnight lows in the 80s and lower 90s will be common, resulting in little relief. Areas of major HeatRisk will continue with Extreme Heat Warnings remaining in effect through Friday.
Storm chances will be limited to the AZ high terrain and southeast AZ today, however storm chances will expand area-wide beginning Wednesday and especially Thursday evening and night. The main impacts will be windy conditions, reduced visibility, lightning and localized areas of flooding.
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