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.

A Few Clouds

75°F

24°C

Humidity 90%
Wind Speed S 17 mph
Barometer 29.81 in (1009.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 18 Apr 1:52 am CDT
Extended Forecast for

Harlingen TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 74. South southeast wind around 14 mph, with gusts as high as 26 mph.

    Low: 74 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 90. Breezy, with a south southeast wind 13 to 18 mph, with gusts as high as 29 mph.

    High: 90 °F

    Mostly Cloudy
    and Breezy

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 66. East wind 8 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 4pm. High near 72. North wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 66. North northeast wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 78. East wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. East wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southeast wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 84 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 68. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 74. South southeast wind around 14 mph, with gusts as high as 26 mph.
Saturday
Mostly cloudy, with a high near 90. Breezy, with a south southeast wind 13 to 18 mph, with gusts as high as 29 mph.
Saturday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 66. East wind 8 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Sunday
Showers, with thunderstorms also possible after 4pm. High near 72. North wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 66. North northeast wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 78. East wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. East wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Southeast wind 6 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 68. Southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 87. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 70. Southeast wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 73.
Friday
Partly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harlingen TX
 26.19°N 97.7°W
Last Update:
1:45 am CDT Apr 18, 2026
Forecast Valid:
2am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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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