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

79°F

26°C

Humidity 97%
Wind Speed E 3 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 78°F (26°C)
Visibility 9.00 mi
Heat Index84°F (29°C)
Last update 13 Aug 7:52 am CDT
Extended Forecast for

Harlingen TX

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 101. Heat index values as high as 109. Light south southeast wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 101 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 78. South southeast wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 109. South southeast wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 79. South southeast wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 79 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 96. Southeast wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 96 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. Southeast wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 80 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 99. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 99 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 79. Southeast wind 5 to 14 mph, with gusts as high as 22 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. Light east southeast wind increasing to 5 to 10 mph in the morning.

    High: 98 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 101. Heat index values as high as 109. Light south southeast wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Tonight
Mostly clear, with a low around 78. South southeast wind 7 to 14 mph, with gusts as high as 22 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 109. South southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 79. South southeast wind 7 to 15 mph, with gusts as high as 24 mph.
Friday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 96. Southeast wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. Southeast wind 7 to 14 mph, with gusts as high as 24 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 99. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 79. Southeast wind 5 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 98. Light east southeast wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 77. East southeast wind 6 to 11 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 98. Light southeast wind becoming east southeast 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
Harlingen TX
 26.19°N 97.7°W
Last Update:
8:18 am CDT Aug 13, 2025
Forecast Valid:
8am CDT Aug 13, 2025-6pm CDT Aug 19, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation