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

78°F

26°C

Humidity 93%
Wind Speed SE 7 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 30 Aug 2:52 am CDT
Extended Forecast for

Harlingen TX

  • Overnight

    Overnight: Partly cloudy, with a low around 78. South southeast wind around 7 mph.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 98. Heat index values as high as 108. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. Southeast wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. Heat index values as high as 107. South southeast wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. East southeast wind 6 to 11 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Labor Day

    Labor Day: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 98. Calm wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 40%.

    High: 98 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 94. Light and variable wind becoming north northeast 5 to 8 mph in the morning. Chance of precipitation is 60%.

    High: 94 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 76. East northeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 76 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 78. South southeast wind around 7 mph.
Saturday
Sunny, with a high near 98. Heat index values as high as 108. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 78. Southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 98. Heat index values as high as 107. South southeast wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 78. East southeast wind 6 to 11 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.
Labor Day
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 98. Calm wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 94. Light and variable wind becoming north northeast 5 to 8 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 76. East northeast wind 5 to 7 mph becoming light and variable after midnight.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Light and variable wind becoming north northeast 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 74. East wind 5 to 8 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 96.
Thursday Night
Partly cloudy, with a low around 74.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Harlingen TX
 26.19°N 97.7°W
Last Update:
3:18 am CDT Aug 30, 2025
Forecast Valid:
3am CDT Aug 30, 2025-6pm CDT Sep 5, 2025
 
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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