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.

Partly Cloudy

77°F

25°C

Humidity 90%
Wind Speed N 13 mph
Barometer 30.01 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 4 Oct 10:35 pm CDT
Extended Forecast for

Mercedes TX

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 73. North wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 73 °F

    Showers

  • Monday

    Monday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 84. North wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then showers likely after 4am. Mostly cloudy, with a low around 71. North wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 87. North wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 71. North northeast wind 5 to 7 mph becoming calm. Chance of precipitation is 10%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. North northeast wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 91 °F

    Sunny then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 72. Northeast wind 5 to 8 mph becoming calm. Winds could gust as high as 20 mph.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. North wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. North northeast wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 73. North wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 84. North wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A chance of showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then showers likely after 4am. Mostly cloudy, with a low around 71. North wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 87. North wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Tuesday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 71. North northeast wind 5 to 7 mph becoming calm. Chance of precipitation is 10%.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. North northeast wind 8 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 72. Northeast wind 5 to 8 mph becoming calm. Winds could gust as high as 20 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. North wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. North northeast wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. North northwest wind 10 to 13 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 70. North wind 6 to 10 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercedes TX
 26.16°N 97.9°W
Last Update:
10:30 pm CDT Oct 4, 2026
Forecast Valid:
10pm CDT Oct 4, 2026-6pm CDT Oct 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation