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.

Overcast

86°F

30°C

Humidity 77%
Wind Speed SE 10 mph
Barometer 29.76 in (1007.7 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 1 Oct 8:52 pm CDT
Extended Forecast for

Sebastian TX

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 75. Southeast wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 75 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 92. Light and variable wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 70%.

    High: 92 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 73. East wind around 6 mph becoming calm. Chance of precipitation is 70%.

    Low: 73 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 90. North wind around 8 mph. Chance of precipitation is 80%.

    High: 90 °F

    Showers
    Likely then
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 72. North northwest wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 72 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 87. North northeast wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 71. North wind 7 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.

    Low: 71 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 85. North wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.

    High: 85 °F

    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. North wind 6 to 11 mph, with gusts as high as 26 mph.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 75. Southeast wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 92. Light and variable wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 73. East wind around 6 mph becoming calm. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm. High near 90. North wind around 8 mph. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 72. North northwest wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 87. North northeast wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 71. North wind 7 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm. High near 85. North wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. North wind 6 to 11 mph, with gusts as high as 26 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. North wind 11 to 14 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 70. North northeast wind 5 to 7 mph becoming calm.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sebastian TX
 26.35°N 97.8°W
Last Update:
8:45 pm CDT Oct 1, 2026
Forecast Valid:
8pm CDT Oct 1, 2026-6pm CDT Oct 8, 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