Phoenix, AZ, September 21, 2026 — As the summer season draws to a close and fall approaches in Arizona, residents can anticipate continued warm weather, particularly in the Phoenix Valley, where temperatures are expected to hover around 100 degrees. This late-season heat is characteristic of the region as the transition to cooler months begins.

While the immediate forecast for some higher elevation areas indicates a possibility of rain today, the outlook for other parts of the state includes a chance of precipitation later in the week. Southern Arizona is slated to potentially see showers on Tuesday.

The Phoenix Valley itself has a forecast for possible showers beginning Wednesday night and extending through Friday morning. The probability of rainfall in the Valley is noted to be highest on Thursday, with an estimated chance of around 30%.

Forecasters indicate that while the Phoenix metropolitan area will remain warm, these scattered shower chances present a slight deviation from typical dry conditions as autumn approaches. Residents and authorities are advised to monitor local weather updates for any changes to the forecast. The specific timing and intensity of any precipitation remain subject to variability.

Details regarding the exact nature of the expected rainfall, such as accumulation amounts or the specific zones most likely to receive precipitation within the Phoenix Valley or Southern Arizona, were not further elaborated in the summary. However, the general pattern suggests a brief period of unsettled weather might accompany the shift in seasons, offering a small chance of relief from the persistent summer warmth in some locales. The high country is noted as having the most immediate possibility for rain on the current day.

Story summarized from the original created by April Warnecke on www.azfamily.com, see more information here.

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