San Antonio weather is expected to stay mostly quiet through Tuesday afternoon, then turn stormy after sunset as a front moves in from the northwest, according to forecaster Justin Horne. He said Tuesday should play out a lot like Monday, with the stronger weather holding off until evening.
Horne said the front and the dryline should help fire off storms that then organize into a line and push south. The Hill Country is expected to feel the first impact, with the San Antonio metro area following later Tuesday night. Severe weather is possible, and the main threats are damaging wind gusts of 70 mph or greater and quarter sized hail. Some street flooding is also expected to be an issue.
The timing matters because the quiet part of the day may give way quickly to a more dangerous night. Horne said it will stay mostly quiet until after sunset, which means many people could be on the roads, out for evening plans or already at home when the storms reach the area. Some showers could linger into the Wednesday morning commute, adding another round of concern for drivers before daylight fully settles in.
After that, the forecast gets fuzzier. Starting Wednesday, the pattern is expected to stay active, and conditions should remain favorable for strong storms even though the exact timing and the hardest-hit areas are impossible to pin down for Wednesday and Memorial Day weekend. That uncertainty is part of what makes the next several days tricky: the storms are expected to arrive in multiple rounds, not as a single clean event.
The other big piece is rain. The area is in a drought, and the rain expected from Tuesday night through Memorial Day is described as drought denting. In spots, as much as 5 inches could fall, enough to build up over time and keep street flooding in the picture as new rounds move through. Horne summed up the outlook simply: stay weather aware and check back often for updates.
For now, the answer to the question hanging over San Antonio weather is clear enough. Tuesday will look calm for most of the day, but the region is headed into an active stretch that could bring damaging wind, hail and useful rain, with the first storms likely to reach the Hill Country before spreading into the San Antonio metro area after dark.
