WEATHER STORY
Phoenix
Weather Forecast Office
Increasing Moisture Late Week Warming Temperatures 2025 Monsoon Season Rainfall September 2025 Climate Summary
Temperatures will gradually warm through midweek, reaching the mid-to-upper 90s across the lower deserts and around 100 degrees in the Phoenix Metro. Temperatures then cool down heading into late this week. These temperatures result in widespread Minor to locally Moderate HeatRisk for those extremely sensitive to the heat, especially without effective cooling or adequate hydration.

Data Courtesy of Phoenix Weather Forecast Office