Phoenix Sizzles As 114-Degree Heat Warning Bakes Valley All Week

Phoenix is heading into a dangerous stretch of heat, with the city already near 91 degrees before sunrise Sunday and an afternoon high expected around 111. The brief chance of monsoon storms tonight offers little relief, since any cells could bring powerful wind gusts before an even hotter, drier pattern takes over.

Extreme Heat Warning Covers The Valley

The National Weather Service in Phoenix has an Extreme Heat Warning in effect through 8 p.m. Saturday for the Phoenix metropolitan area. Afternoon temperatures are expected to run from 108 to 116 degrees, creating major to extreme heat risk and keeping overnight lows unusually warm.

Sunday will be mostly sunny with a high near 111 degrees, followed by a low around 89. Monday should reach about 108 degrees, with heat index values as high as 110, before temperatures climb again Tuesday through Saturday.

Sunday Storm Chance Comes With Wind Risk

Phoenix has a 30% chance of showers and thunderstorms between about 7 p.m. and 2 a.m. Sunday night into Monday morning. Storms may be isolated or scattered, but outflow winds could gust to 20 mph and briefly reduce visibility, especially if blowing dust develops.

Monday's rain chance drops sharply, and the forecast turns virtually dry from Tuesday through the weekend. Highs are expected near 112 Tuesday, 113 Wednesday through Friday and 114 Saturday, while overnight lows remain around 88 to 92 degrees.

Heat Relief Resources Are Available

Maricopa County says residents who need a cool indoor place can call 2-1-1 for information about free cooling centers, hydration stations, transportation and other heat-relief services. People working or exercising outside should move strenuous activity to early morning or evening, drink water regularly and take frequent breaks in shade or air conditioning.

Anyone showing confusion, fainting, loss of consciousness or other signs of heat stroke should be moved to a cool place while 911 is called. With nighttime temperatures staying stubbornly high, checking on older neighbors, children, pets and anyone without reliable air conditioning is especially important.