Clear skies and warm temperatures will dominate Southern Arizona and California's Imperial Valley on Sunday, May 24, 2026, before a brief cooling trend and shifting wind patterns arrive later in the week.
Afternoon highs on Sunday are expected to reach the mid-to-upper 90s.
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Tucson and Yuma are forecast at 96 degrees, while El Centro and Imperial could hit 97 degrees.
A slight chance of showers and thunderstorms may develop Sunday afternoon into Monday, mainly east and southeast of Tucson.
Lingering precipitation could continue early Tuesday near the New Mexico state line.
Overnight lows on Sunday morning will drop into the 60s for much of Pima County.
Cooler locations such as Sasabe and Green Valley may see lows in the 50s.
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Wind gusts will increase Sunday evening, reaching 13 to 17 mph in Yuma County and 14 to 16 mph in the Imperial Valley by late afternoon.
Travelers returning from the San Diego area through Ocotillo on Monday evening should prepare for severe wind gusts up to 55 mph.
Yuma County will experience more moderate gusts between 12 and 17 mph.
Mid-Week Cooling and Weekend Warm-Up
A significant temperature drop is expected on Wednesday and Thursday. Yuma County and the Imperial Valley will cool to highs between 86 and 89 degrees.
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A warming trend will follow, bringing triple-digit temperatures by the following weekend.
