Saturday, May 30, 2026 — San Antonio is waking up under a blanket of clouds and humidity, with morning temperatures stuck in the mid‑70s and an afternoon high expected near 90°F. South winds are barely stirring at around 5 mph, so the warmup will be slow but steady under a thick layer of mid‑ to high‑level clouds. Overnight lows are forecast to hold in the low 70s, which means the sticky air is here to stay through tonight.
Afternoon Outlook
This afternoon stays mostly cloudy with a gentle south breeze and that near‑90°F high still on track. The local forecast gives only about a 1% chance of measurable rain, so while you might spot a little virga or feel a stray sprinkle, actual rain in the gauge is unlikely. No watches or warnings are in effect this morning, and both the commute and outdoor plans should play out like a typical late‑May day: warm, muggy, and mostly uneventful.
Midweek Storm Chances
According to the National Weather Service, moisture ramps up next week, with the best shot at scattered afternoon showers and thunderstorms arriving Tuesday, June 2, 2026. Forecasters expect storms to be scattered and short‑lived instead of forming a big organized line, so one neighborhood may catch a quick heavy downpour while another barely gets a drop. It is worth checking for updates Tuesday afternoon and evening in case the activity fills in and becomes more widespread.
What To Know
Outdoor plans through Monday should be in good shape, but it is smart to build in some flexibility or have a shelter option ready for Tuesday afternoon. If you need a break from the heat or do not have air conditioning, the City of San Antonio keeps an updated list of cooling centers, and VIA offers fare‑free trips to those locations when they are open. Keep the water bottle handy, check local radar before heading out, and remember the usual Texas rule on the roads: never drive through standing water.
