National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mid Valley Airport (KTXW)

Lat: 26.18°NLon: 97.97°WElev: 70ft.

Fair

92°F

33°C

Humidity 52%
Wind Speed SE 20 G 26 mph
Barometer 29.89 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 30 Jul 7:15 pm CDT
Extended Forecast for

Mercedes TX

  • Tonight

    Tonight: Partly cloudy, with a low around 78. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 99. Heat index values as high as 108. South southeast wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 99 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 79. South southeast wind 9 to 16 mph, with gusts as high as 28 mph.

    Low: 79 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 110. South southeast wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 79. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. South southeast wind 7 to 11 mph.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 78. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 100. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southeast wind 10 to 16 mph, with gusts as high as 30 mph.

    Low: 79 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 78. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.
Friday
Partly sunny, then gradually becoming sunny, with a high near 99. Heat index values as high as 108. South southeast wind 8 to 16 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 79. South southeast wind 9 to 16 mph, with gusts as high as 28 mph.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 110. South southeast wind 9 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 79. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 101. South southeast wind 7 to 11 mph.
Sunday Night
Partly cloudy, with a low around 78. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny and hot, with a high near 100. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 79. South southeast wind 10 to 16 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 99. South southeast wind 10 to 16 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 79. Southeast wind 8 to 16 mph, with gusts as high as 26 mph.
Wednesday
Mostly sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercedes TX
 26.14°N 97.9°W
Last Update:
7:18 pm CDT Jul 30, 2026
Forecast Valid:
7pm CDT Jul 30, 2026-6pm CDT Aug 6, 2026
 
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Additional Resources

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Chance of Precipitation