Phoenix is waking up Wednesday to another morning in the low 90s, but the real heat is still ahead: the high is expected to reach 109 degrees, with heat index values as high as 112. An Extreme Heat Warning remains in effect for the Phoenix metro through 8 p.m. Friday, while a separate dust-and-thunderstorm threat could complicate the evening.
Dangerous Heat Holds Through Friday
According to the National Weather Service in Phoenix, Thursday should be nearly as hot, with a high near 109 and another heat index up to 112. Friday could be the hottest day of the immediate stretch at 110 degrees, followed by 111 on Saturday, while overnight lows barely fall to around 88 to 90 degrees.
Storms Could Arrive After The Furnace
Wednesday stays mostly sunny through late afternoon, but a slight chance of showers and thunderstorms enters the forecast between 7 and 11 p.m. Storms developing east and south of the Valley could send sudden outflow winds into Phoenix, bringing blowing dust, reduced visibility and isolated heavy rain; a Blowing Dust Advisory runs from 5 to 10 p.m.
Little Relief This Weekend
Thursday carries a 20% chance of late-day showers and thunderstorms, while Friday and Saturday have slight storm chances after 5 p.m. Sunday has a similar late-day risk, but Monday and Tuesday remain mostly sunny and hot, with highs near 108 and 109 degrees.
Heat Safety Is The Main Assignment
Residents should avoid strenuous outdoor activity during the afternoon, drink water regularly and take frequent breaks in air conditioning or shade. Maricopa County says free cooling, respite and hydration sites are available during the summer, and residents can call 2-1-1 for a nearby location, water, transportation assistance and other heat-relief resources.
Anyone overcome by the heat should be moved to a cool, shaded place immediately, and heat stroke is an emergency requiring a 911 call. With temperatures staying near 90 even overnight, Phoenix residents should plan around the heat well beyond the afternoon commute or a midday outing.
