Tucson, Ariz. – Southern Arizona will endure another blast of triple-digit heat Wednesday before storm chances bring relief and risk later this week. Temperatures are expected to soar near 102°F Wednesday afternoon, creating dangerous heat for those outdoors or traveling. Residents should limit strenuous activity, hydrate frequently, and take precautions to avoid heat-related illness.
According to the National Weather Service in Tucson, a slight chance of thunderstorms will develop by Thursday afternoon, becoming more widespread Thursday night into Friday. The I-10 corridor near Tucson could see heavy downpours and lightning late Thursday, posing hazards for evening commuters and overnight travelers. The storm system is expected to lower daytime highs into the upper 80s by the weekend, marking the first taste of fall-like conditions.
Cities including Oro Valley, Marana, and Vail may see localized flooding as storms roll through. The combination of rain-soaked roads and sudden lightning will make travel risky, particularly along low-lying stretches and washes. Drivers should allow extra time and avoid flooded intersections. Outdoor events planned late Thursday or Friday may face cancellations or delays.
By Saturday and Sunday, temperatures should stay in the upper 80s with scattered showers, a welcome break from the relentless heat. The cooler trend signals the transition into early fall weather across southern Arizona.
Warnings remain possible as storms intensify late this week. Officials urge residents to monitor updates and prepare for rapidly changing conditions through the weekend.
Five-Day Forecast for Tucson, Arizona
- Wednesday: Sunny, high 102°F. Mostly clear overnight, low 78°F.
- Thursday: Slight storm chance, high 102°F. Evening thunderstorms more likely, low 74°F.
- Friday: Showers and thunderstorms likely, high 93°F. Low around 68°F.
- Saturday: Storm chances continue, partly sunny, high 87°F. Low 67°F.
- Sunday: Partly cloudy with scattered showers, high 88°F. Low 67°F.
