Overview
- The monsoon season officially began on Monday, June 15, and scattered showers and storms were observed across parts of the Phoenix Valley and central Arizona.
- Forecasts put the chance of storms in Phoenix at roughly 20% for the evening as thunderstorms develop over higher terrain and outflow boundaries may drive activity into the metro area.
- Daytime highs remain very hot near 108–110°F, keeping heat-related health risks high even when storms bring brief relief.
- State and local agencies including ADOT, fire departments, and public health officials urged standard safety steps for drivers and residents such as slowing for slick roads, avoiding flooded washes, seeking cooling, and staying away from downed power lines.
- The seasonal outlook from NOAA's Climate Prediction Center favors a hotter, potentially wetter monsoon tied to a strengthening El Niño and low mountain snowpack, though Phoenix has logged below-average rainfall so far and forecasts show a drier, slightly cooler trend by midweek.