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

Harlingen, Rio Grande Valley International Airport (KHRL)

Lat: 26.23°NLon: 97.66°WElev: 33ft.

Fair

77°F

25°C

Humidity 90%
Wind Speed W 6 mph
Barometer 29.92 in (1012.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Sep 4:52 am CDT
Extended Forecast for

Harlingen TX

  • Today

    Today: Sunny, with a high near 98. Light and variable wind becoming east northeast 5 to 10 mph in the morning.

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. East wind 5 to 9 mph becoming light and variable after midnight.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 99. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 98. Light south southeast wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 98 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78. South southeast wind 6 to 14 mph, with gusts as high as 21 mph.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98. South southeast wind 6 to 10 mph.

    High: 98 °F

    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 11 mph, with gusts as high as 20 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 97. South southeast wind 5 to 9 mph. Chance of precipitation is 60%.

    High: 97 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 98. 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 9 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 99. 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 13 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 98. Light south southeast wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 78. South southeast wind 6 to 14 mph, with gusts as high as 21 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98. South southeast wind 6 to 10 mph.
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 11 mph, with gusts as high as 20 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 97. South southeast wind 5 to 9 mph. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. Southeast wind 5 to 10 mph.
Monday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 96. South wind 5 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Tuesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 94. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Harlingen TX
 26.19°N 97.7°W
Last Update:
5:00 am CDT Sep 3, 2025
Forecast Valid:
5am CDT Sep 3, 2025-6pm CDT Sep 9, 2025
 
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Additional Resources

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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