Last 7 days
Today
36° / 24° High / Low (°C)
92% Humidity
16% Rain probability
Partly cloudy Condition
What this means
In San Antonio on 23 Sep 2026, no rain is expected: 16% chance, 0.0 mm forecast (source: Open-Meteo).
Today should stay dry — just 16% chance of rain. Safe to leave the umbrella at home.
Rain season
San Antonio sits on the edge of the Texas Hill Country, where Gulf moisture collides with drier continental air — producing intense, often dangerous rainfall. Spring (April–May) and autumn (September–October) are the wettest periods; summer can be hot and largely dry. Flash flooding is the primary hazard: the Balcones Escarpment to the north funnels runoff rapidly toward the city.
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