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

71°F

22°C

Humidity 96%
Wind Speed SE 8 mph
Barometer 29.85 in (1010.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Nov 12:52 am CST
Extended Forecast for

Sebastian TX

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 69. South southeast wind around 9 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 7am. Otherwise, mostly cloudy through mid morning, then becoming sunny, with a high near 90. South southeast wind 8 to 17 mph, with gusts as high as 26 mph.

    High: 90 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. South southeast wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. South southeast wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. Southeast wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Breezy, with a south southeast wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 91 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70. Southeast wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Partly sunny, with a high near 88. Breezy, with a south southeast wind 13 to 22 mph, with gusts as high as 31 mph.

    High: 88 °F

    Breezy.
    Slight Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69. South southeast wind 8 to 16 mph, with gusts as high as 28 mph.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 69. South southeast wind around 9 mph, with gusts as high as 20 mph.
Monday
Patchy fog before 7am. Otherwise, mostly cloudy through mid morning, then becoming sunny, with a high near 90. South southeast wind 8 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 70. South southeast wind 10 to 15 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 91. South southeast wind 10 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 71. Southeast wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 91. Breezy, with a south southeast wind 10 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly cloudy, with a low around 70. Southeast wind 13 to 15 mph, with gusts as high as 28 mph.
Thursday
A 20 percent chance of showers before noon. Partly sunny, with a high near 88. Breezy, with a south southeast wind 13 to 22 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 69. South southeast wind 8 to 16 mph, with gusts as high as 28 mph.
Friday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 87. South wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67. East wind 7 to 9 mph.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 61.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sebastian TX
 26.37°N 97.78°W
Last Update:
1:00 am CST Nov 17, 2025
Forecast Valid:
1am CST Nov 17, 2025-6pm CST Nov 23, 2025
 
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Additional Resources

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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