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

57°F

14°C

Humidity 72%
Wind Speed NW 9 mph
Barometer 30.36 in (1028.0 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 17 Oct 11:52 pm CDT
Extended Forecast for

Sebastian TX

  • Overnight

    Overnight: Partly cloudy, with a low around 53. North northwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. North northwest wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 64. North northwest wind 3 to 7 mph.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 82. North northeast wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 68. North northeast wind 5 to 8 mph becoming calm.

    Low: 68 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. Northeast wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. Northeast wind 5 to 9 mph becoming light. Winds could gust as high as 20 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. East northeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. East northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 53. North northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 77. North northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 64. North northwest wind 3 to 7 mph.
Monday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 82. North northeast wind 6 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 30 percent chance of showers before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 68. North northeast wind 5 to 8 mph becoming calm.
Tuesday
Mostly sunny, with a high near 86. Northeast wind 6 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 69. Northeast wind 5 to 9 mph becoming light. Winds could gust as high as 20 mph.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. East northeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 68. East northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 87. Light north northeast wind becoming east 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 65. East wind 5 to 9 mph becoming calm in the evening.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 68.
Saturday
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:
12:45 am CDT Oct 18, 2026
Forecast Valid:
12am CDT Oct 18, 2026-6pm CDT Oct 24, 2026
 
Forecast Discussion
 
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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