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Showers & storms possible today

A front will lower humidity and temperatures next week

Forecast headlines for San Antonio (Copyright 2025 by KSAT - All rights reserved.)

FORECAST HIGHLIGHTS

  • OVERNIGHT STORMS: Possible near Rio Grande
  • HEAT INDEX 102°+: Humidity will push heat indices above 100° daily through Monday
  • FRONT TUESDAY: Lower humidity & temps by Wednesday

FORECAST

We’ve now experienced four days in a row of record heat, but some relief is on the way next week.

ISOLATED STORMS

Isolated storms can’t be ruled out, but any storms that happen to develop should significantly weaken before hitting San Antonio. There’s just an outside chance that San Antonio could get leftovers.

Rainfall chances overnight. (Copyright 2025 by KSAT - All rights reserved.)

TEMPERATURE & HUMIDITY

Plan for more of the same this weekend and to start next week. With afternoon temperatures well into the 90s combined with high humidity making it feel like 102-106°.

Closer to 90° for afternoon highs by the middle of next week (Copyright 2025 by KSAT - All rights reserved.)

A FRONT?!

Yes... but, know this time of year our cold fronts aren’t particularly strong. That said, we’ll enjoy some lower humidity and lower temperatures by Wednesday. Morning lows will return to the lower 60s, while afternoon highs return to near 90°.

7 Day forecast as of 5/17/25. (Copyright 2025 by KSAT - All rights reserved.)

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