San Antonio

San Antonio Forecast, Warm Days Ahead with Potential Showers and Thunderstorms to End the Week

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Published on October 21, 2025
San Antonio Forecast, Warm Days Ahead with Potential Showers and Thunderstorms to End the WeekSource: Google Street View

San Antonians, you might want to gently nudge your thermostats as we roll into a dynamic end of the week. Today's vista, as reported by the National Weather Service, presents us with patchy fog that should have cleared by the time most of us have poured that second cup of coffee. Expect the sun to claim the sky, pushing temperatures up to around 91 degrees. For those venturing out, a light jacket might just suffice, with winds shifting from a humble whisper to a breezy chant of 5 to 10 mph.

Tonight, the city's canvas is set to display a broad stroke of clarity, with stars likely visible through a mostly clear sky. However, to fully embrace the evening's show, a sweater might be in order as thermometers dip to a cooler 68 degrees. Navigators of the nocturne should be aware of the northeast winds that have decided to somewhat assertively gust as high as 20 mph.

What rolls in as a Wednesday sun, courtesy of the National Weather Service, will grace us with a high of 89 degrees and a comforting, if not insistent east southeast draft in the afternoon. As the cloak of night descends, the clouds will gather, jockeying for position in the sky above San Antonio to bring the low to around 70 degrees.

By Thursday, the narrative cleaves to a familiar pattern with mostly sunshine and the mercury stretching up near 92 degrees. South southeast winds continue to casually exert their presence—gusts hitting that 20 mph mark. Come nighttime, partly cloudy skies and a steady 70 degrees are anticipated, laid gently beneath a southeast wind that continues to readily flirt with the 15 to 20-mph range.

The week's plot thickens on Friday as the chance of showers tiptoe on the probabilities rim, ushering in potential thunderstorms after 1pm. Despite a veiled sun, the high should crest near 91 degrees, with those south winds unabashedly reaching out up to 25 mph. Our collective gaze will then shift toward a Friday night spattered with likely showers and thunderstorms, primarily after the witching hour, with a probable chance standing at 60 percent.

The weekend's forecast calls for a bit of uncertainty, promising a 50 percent chance of showers and thunderstorms on Saturday, but also gifts us with partly sunny skies and a high of 84 degrees. By Sunday, we get a reprieve—mostly sunny conditions will rise alongside daytime temperatures hitting 87 degrees. The benevolent conditions continue into Monday, with sunshine dominating and a comfortable high near 88 degrees.