San Antonio rolled into Monday morning, June 15, 2026, under a gray, muggy sky, with light rain, fog and that thick, tropical-feeling air pushing temperatures near 81°F and cutting visibility in spots. Showers and thunderstorms are expected to roam across the area much of the day, and any stronger cell could dump heavy rain in a hurry, leading to quick ponding on streets and slower, sloppier commutes. If you have to be on the road, build in extra time and steer clear of low-lying spots that tend to flood.
Flood Watch Through Tuesday Evening
A Flood Watch remains in effect through Tuesday evening, June 16, 2026, for Bexar County and a broad stretch of south-central Texas. According to the National Weather Service Austin/San Antonio, most areas are likely to see 1–2 inches of new rain, with isolated pockets that could top 8 inches and brief bursts of 2–3 inches per hour possible. With soils already saturated, forecasters are flagging an elevated risk of flash flooding along creeks, streams and low-water crossings, so remember the old rule: turn around, don’t drown.
What To Expect Today And Tonight
Showers and thunderstorms are most likely before mid-afternoon, with a high near 83°F and light east winds around 5 mph. The chance of measurable rain will run near 90% at times. Tonight, rain chances ease to about 50%, but any storms that redevelop could drop another half to three-quarters of an inch in spots. For more on the setup behind this soggy stretch and where to find local cooling resources, check out how San Antonio is set to sizzle.
Midweek Outlook
Rain chances should slide downward by midweek as a warmer, drier pattern takes hold Wednesday and Thursday. Forecast highs jump into the low 90s on Wednesday before climbing toward 97°F on Thursday, and heat indices may push past 100°F where skies clear out. Keep local alerts switched on through the week, since the flash-flood threat could return if storms repeatedly redevelop over the same neighborhoods.
