San Antonio residents could face storm delays on Saturday, September 6, as showers and thunderstorms return just in time for weekend travel. Drivers on I-35 and families heading to football games should prepare for changing conditions and possible lightning.
According to the National Weather Service in Austin/San Antonio, Saturday brings a 40 percent chance of rain after 1 p.m., with thunderstorms possible into the evening. By Sunday, chances increase to 60 percent, raising concerns for outdoor events, road safety, and weekend plans across Bexar County.
Temperatures will remain hot, with highs near 91 Saturday and 91 again Sunday before storms develop. Northeast winds of 5 to 10 mph could provide minor relief from the heat, but muggy air lingers. Sunday storms may disrupt outdoor gatherings, with the heaviest rain expected late in the day.
Residents should secure outdoor items, charge devices, and keep alternate plans ready if games or events are delayed. Drivers should avoid flooded roadways and allow extra time on major routes, especially I-35, Loop 1604, and U.S. 281, where downpours can quickly reduce visibility.
The pattern holds into Monday, with another 40 percent chance of storms before skies clear Tuesday. More stable weather arrives midweek, with sunshine and highs in the mid-90s through Thursday.
Warnings remain in place for weekend storms, and more advisories could follow if rainfall intensifies.
Five-Day Forecast for San Antonio, TX
- Saturday: High 91, chance of showers and thunderstorms after 1 p.m.
- Sunday: High 91, showers and storms likely, especially late.
- Monday: High 92, chance of showers and storms.
- Tuesday: High 93, mostly sunny and dry.
- Wednesday: High 96, sunny skies return.
