Phoenix and western Arizona remain under an Extreme Heat Warning through 8 p.m. Sunday. Highs are forecast near 113 degrees Saturday and 111 Sunday in Phoenix, with overnight temperatures struggling to dip below 90. Lower elevations of the Grand Canyon, including Phantom Ranch, could reach 110 to 112 degrees. Storms in southeastern Arizona may send gusty outflow winds and possible blowing dust into the Valley, while Phoenix rain chances remain near 10%. Some relief is expected next week, with highs dropping into the 103-to-105-degree range by Tuesday.
