Greatest chance for rain: mid-morning through early afternoon
WATCH LIVE RADAR IN THE VIDEO ABOVEFORECAST HIGHLIGHTS
DOWNPOURS TODAY: Best odds (30% coverage) will be this morning through early afternoon
HIGH PRESSURE: Takes over for rest of the week, quiet into weekend
HEAT INDEX: Likely 95°+ during the afternoons
FORECAST
TODAY
There are a few streamer showers in the area, and they’ll be with us through the early afternoon hours. The odds of seeing rain in San Antonio sit at 30%. Should you see a downpour, expect brief, heavy rain. Hail and/or damaging wind is NOT possible.
Otherwise, it’ll be a partly cloudy, humid day. Temperatures will top out near 90°, while heat indices will reach the mid-90s.
SUMMER DOLDRUMS
It appears we are making our annual transition to a quieter, more summer-like pattern. A ridge of high pressure will build this week, keeping us rain-free and warm. The pattern of morning clouds and afternoon sun will be the norm.
High pressure builds this week (Copyright KSAT-12 2026 – All Rights Reserved)
HEAT INDEX
It’s no surprise that we’ll be dealing with heat and humidity in June. But, now is the time for our annual reminder regarding the heat index. While temperatures are not expected to get out of control, heat index values will consistently top 95° in the afternoons this week. Stay cool!
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About the AuthorsJustin Horne headshotJustin Horne
Justin Horne is a meteorologist and reporter for KSAT 12 News. When severe weather rolls through, Justin will hop in the KSAT 12 Storm Chaser to safely bring you the latest weather conditions from across South Texas. On top of delivering an accurate forecast, Justin often reports on one of his favorite topics: Texas history.
Sarah Spivey headshotSarah Spivey
Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017.
Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News.
When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.