San Antonio, TX Weather - Tomorrow’s Forecast

Tuesday

Hot

High:
99°F

Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.

Tuesday Night

Mostly clear

Overnight low:
77°F

Mostly clear, with a low around 77. East wind 5 to 10 mph becoming south after midnight.