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

82°F

28°C

Humidity 77%
Wind Speed N 5 mph
Barometer 29.96 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Sep 9:15 am CDT
Extended Forecast for

Mercedes TX

  • Today

    Today: Sunny, with a high near 99. Light and variable wind becoming east northeast 5 to 10 mph in the morning.

    High: 99 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. East wind 5 to 10 mph becoming south after midnight.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South southeast wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 99. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 99 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 99. South southeast wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 99 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 79. East southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 98. South southeast wind 6 to 10 mph. Chance of precipitation is 60%.

    High: 98 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 99. Light and variable wind becoming east northeast 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 76. East wind 5 to 10 mph becoming south after midnight.
Thursday
Sunny and hot, with a high near 101. Calm wind becoming east 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 75. South southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Friday
Mostly sunny, with a high near 99. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 78. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 99. South southeast wind 6 to 10 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 79. East southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 98. South southeast wind 6 to 10 mph. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. Southeast wind 6 to 10 mph.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 96. South southeast wind 6 to 9 mph becoming north northwest in the morning. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Tuesday
Showers and thunderstorms likely. Mostly sunny, with a high near 95. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercedes TX
 26.16°N 97.93°W
Last Update:
9:18 am CDT Sep 3, 2025
Forecast Valid:
9am CDT Sep 3, 2025-6pm CDT Sep 9, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation