Phoenix, Ariz. – Triple-digit heat will grip Arizona on Labor Day, but storm chances Monday afternoon may cause travel disruptions across Phoenix. Drivers on I-10 and Loop 202 should prepare for sudden downpours and possible flash flooding if storms develop.
According to the National Weather Service, Phoenix will reach 107°F Monday with a 20 percent chance of thunderstorms after 2 p.m. While rain totals are uncertain, brief but heavy bursts could reduce visibility and create dangerous road conditions. Residents are urged to limit outdoor plans during peak heat and keep travel flexible in case storms intensify.
Metro Phoenix communities including Glendale, Tempe, and Mesa could experience spotty storms Monday evening. Any cell that forms may bring gusty winds and lightning. Outdoor gatherings should have shelter options, especially during Labor Day events. Cooling centers remain available across Maricopa County for those without reliable air conditioning.
Tuesday will stay hot, with highs near 106°F and another storm chance overnight. Midweek trends show daily thunderstorm potential, particularly Wednesday night into Thursday, as moisture builds across central Arizona. Each storm carries the risk of localized flooding, especially in washes and low-lying roads.
Residents should prepare for shifting conditions, charge devices in case of outages, and avoid crossing flooded streets. Updates from the National Weather Service will continue through the week.
Five Day Forecast for Phoenix, AZ
- Monday: High 107°F, 20% chance of storms after 2 p.m. Low 88°F.
- Tuesday: High 106°F, mostly sunny, storm chance overnight. Low 86°F.
- Wednesday: High 104°F, storm risk after 11 a.m. Low 83°F.
- Thursday: High 101°F, storms possible. Low 80°F.
- Friday: High 98°F, partly cloudy with showers possible. Low 70°F.
