National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Harlingen, Rio Grande Valley International Airport (KHRL)

Lat: 26.23°NLon: 97.66°WElev: 33ft.

Fog/Mist

78°F

26°C

Humidity 90%
Wind Speed SE 12 mph
Barometer 29.68 in (1004.9 mb)
Dewpoint 75°F (24°C)
Visibility 4.00 mi
Heat Index80°F (27°C)
Last update 6 May 5:52 am CDT
Extended Forecast for

Primera TX

Heat Advisory May 6, 01:00pm until May 6, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Partly sunny, with a high near 99. Heat index values as high as 114. South southeast wind 8 to 15 mph, with gusts as high as 24 mph.

    High: 99 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 78. East southeast wind 8 to 13 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.

    Low: 78 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 92. Heat index values as high as 105. East northeast wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 92 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Cloudy, with a low around 75. Northeast wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 75 °F

    Chance
    T-storms then
    Heavy Rain

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89. Northeast wind 5 to 10 mph becoming southeast in the morning.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. East wind 5 to 9 mph becoming light east southeast after midnight.

    Low: 74 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 90 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 74. East southeast wind 5 to 10 mph becoming light south southeast after midnight.

    Low: 74 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 95. Light southeast wind becoming east southeast 5 to 10 mph in the morning.

    High: 95 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 99. Heat index values as high as 114. South southeast wind 8 to 15 mph, with gusts as high as 24 mph.
Tonight
Increasing clouds, with a low around 78. East southeast wind 8 to 13 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 92. Heat index values as high as 105. East northeast wind 5 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Cloudy, with a low around 75. Northeast wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89. Northeast wind 5 to 10 mph becoming southeast in the morning.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. East wind 5 to 9 mph becoming light east southeast after midnight.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 74. East southeast wind 5 to 10 mph becoming light south southeast after midnight.
Sunday
Partly sunny, with a high near 95. Light southeast wind becoming east southeast 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 76. East southeast wind 5 to 11 mph.
Monday
Mostly cloudy, with a high near 88. North northeast wind 5 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 70.
Tuesday
Partly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Primera TX
 26.21°N 97.75°W
Last Update:
6:30 am CDT May 6, 2026
Forecast Valid:
6am CDT May 6, 2026-6pm CDT May 12, 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