Monsoon storms start the week before a shift back to extreme heat
- Posted on July 21, 2026
- By The Arizona Republic
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- 1 min read
The week begins with significant monsoon activity bringing thunderstorms and rainfall to the Valley region. Weather conditions will gradually stabilize by midweek as storm systems weaken. Following this wet pattern, a powerful high-pressure system positioned to the west will drive temperatures dramatically upward, with forecasts predicting dangerously hot conditions exceeding 110 degrees Fahrenheit. Residents should prepare for the rapid transition from stormy weather to extreme heat.
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