National Weather Service United States Department of Commerce
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Last Map Update: Sun, Jun. 20, 2021 at 5:40:25 am CDT

National Weather Service Austin/San Antonio, TXNational Weather Service Austin/San Antonio, TXNational Weather Service Houston/Galveston, TX
National Weather Service Austin/San Antonio, TXZoom
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National Weather Service Brownsville/Rio Grande Valley, TXNational Weather Service Brownsville/Rio Grande Valley, TX

Mostly cloudy today with isolated to scattered showers and thunderstorms over the Coastal Plains, and offshore. Warm to hot and humid with highs ranging from near 90 along the coast to around 100 near the Rio Grande. Maximum Heat Index values will range from 105 to 109 degrees.
Mostly cloudy and humid tonight. Isolated showers and thunderstorms near the coast. Lows in the upper 70s to lower 80s.
Isolated thunderstorms will be possible over eastern sections of south Texas Sunday and Monday. Hot temperatures and high humidity will lead to dangerous heat conditions Sunday and especially Monday. Afternoon heat index values will range from 103 to 110 degrees Sunday and 107 to 115 degrees Monday. Scattered thunderstorms are expected with a weak frontal boundary Tuesday with isolated storms possible for Wednesday and Thursday.

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