Increased moisture in the region make scattered showers and thunderstorms possible each afternoon and evening through Friday, the weather service says.
Remnants of former tropical storm Mario is expected to bring scattered thunderstorms to the area through Friday, the National Weather Service said Wednesday in its forecast.
Some thunderstorms could produce locally heavy rainfall and flash flooding, the forecast said.
The region will dry out this weekend, and triple-digit high temperatures are expected to return to Tucson next week, the weather service said.
Photos: Monsoon 2025 in Tucson
An monsoon storm cell throws down a bolt near midtown just after sundown, part of a series of storms that ran mostly to south and east, September 25, 2025, Tucson, Ariz.
A lightning bolt hits just east of downtown one of a series of intense storms that skirted most of the city, September 25, 2025, Tucson, Ariz.
Foot traffic along Congress Street moves under a red monsoon sky as dusk settles over Hotel Congress and downtown Tucson, Ariz., July 18, 2025.
A pedestrian walks by along Church Avenue at Alameda Street with the sun going down after a monsoon storm skirted along the far eastern edge of Tucson, Ariz., before quickly dying out, July 8, 2025.
Kids take a ride on playground equipment at Joaquin Murrieta Park in Tucson, Ariz. under clouds that moved in early in the evening on June 30, 2025.
The last time rain was recorded at Tucsonâs airport â the official location for weather data here â was .1-inches on July 22. This yearâs monsoon has officially dropped less than two inches of rain since June 1, the start of the cityâs monsoon period.
Garrett Asher uses an umbrella to shield himself from the rain during a visit at Reid Park Zoo, 3400 East Zoo Court, Tucson, Ariz., July 16, 2025.
A truck drives through flooded streets as heavy rain showers hit the city of Tucson, West Fort Lowell Road, Tucson, Ariz., July 3, 2025.
Petra Thompson uses a garbage bag to protect her hair from a monsoon storm that rolled over the westside in Tucson, Ariz. on July 2, 2025. Thompson said she her just done her hair and wanted to keep it dry as she crossed Grande Ave at St. Maryâs Road.
Guests explore Reid Park Zoo as rainfall continues through Southern Arizona, 3400 East Zoo Court, Tucson, Ariz., July 16, 2025.
A pedestrian picks his way over the pool gathered in the gutters of Stone Avenue and Pennington Street as rain from the first monsoon storm of the season drops on Tucson, Ariz., July 2, 2025.
A City of Tucson bus rider tries to keep dry as heavy rain and hail hit the city, Oracle and Fort Lowell stop, July 3, 2025.
A cyclists maneuvers through the puddles flooding the bike lane along Stone Avenue as the yearâs first monsoon storm drops rain on Tucson, Ariz., July 2, 2025.
People exit Reid Park Zoo as rainfall continues through Southern Arizona, 3400 East Zoo Court, Tucson, Ariz., July 16, 2025.
The "Balancing Actâ sculpture poses underneath the dark cloudy skies as rain showers pass through Southern Arizona, 4502 North First Avenue, Tucson, Ariz., July 2, 2025.
Traffic moves along St. Maryâs Road as the first monsoon hits the westside of Tucson, Ariz. on July 2, 2025.
A pedestrian braves the rain, walking along Church Avenue at Pennington Street in the first monsoon storm of the season over Tucson, Ariz., July 2, 2025.
A man crosses Scott Avenue at Pennington Street with the rain falling on Tucson, Ariz., July 2, 2025, in the yearâs first monsoon storm.
A pedestrian, equipped for the rain, makes his way along Congress Street in the first monsoon storm of the season over Tucson, Ariz., July 2, 2025.
A man waits for the bus as heavy showers begin to pour in Tucson, North Oracle Road, Tucson, Ariz., July 3, 2025.
Afternoon traffic continues down North Oracle Road, as heavy rain showers hit the city, July 3, 2025.
Dark storm clouds roll through Southern Arizona, North Oracle Road, Tucson, Ariz., July 2, 2025.
