San Antonio gets a warm, humid Sunday with mostly cloudy skies and a high near 82 degrees, but the bigger weather story is already lining up for early Tuesday. Monday climbs to about 85 before a cold front sweeps through overnight, bringing a line of showers and thunderstorms that could include a few strong storms.
Clouds And Fog Start The Week
Sunday's rain chance is just 0%, and an east wind near 5 mph should keep the day more muggy than messy. Low clouds and patchy fog may linger into late morning, especially in low-lying spots, before some sun breaks through during the afternoon, according to the National Weather Service Austin/San Antonio office.
Monday Turns Warmer Before The Front Arrives
Monday morning could start with patchy fog before 8 a.m., then temperatures rise to around 85 under partly sunny skies. A stiffer southerly breeze is expected, while rain stays out of the daytime forecast; shower and thunderstorm chances rise after midnight Monday night.
Tuesday Brings The Week’s Main Weather Trouble
Showers and thunderstorms are likely before noon Tuesday, with a 30% chance of precipitation and a high near 80. The front should move through during the morning and early afternoon, then winds turn west-northwest as drier air arrives.
A Few Strong Storms Are Possible
The weather service says enough wind and instability could support a few isolated strong to severe storms along the line. Damaging winds are the main concern, with some large hail possible; the current level 1-of-5 severe-weather outlook is aimed at areas along and north or west of the I-35 corridor.
No watches, warnings or advisories are currently posted for the San Antonio forecast area. People with morning commutes or outdoor plans Tuesday should still keep an eye on updates, especially if they live north or west of the I-35 corridor.
Cooler, Drier Air Follows
Behind the front, Tuesday night falls to around 56 with mostly clear skies, while Wednesday and Thursday bring sunny afternoons near 77 and 79. Friday stays mostly sunny near 77, with only slight rain chances returning Friday night and Saturday.
The sharper Tuesday storm signal updates Hoodline's earlier Halloween forecast, which already flagged a warm Sunday and Monday followed by unsettled weather. For now, the practical plan is simple: enjoy the warm weekend finish, then leave extra time Tuesday morning and check the sky before heading out.
