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- New: Preliminary Damage Survey Of Harlingen To Laureles Texas Microburst Event On May 9, 2026
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- New: The 2026 Rio Grande Valley/Deep South Texas Hurricane Guide is Here!
- Nuevo: Guia de Huracanes 2026 del Valle del Rio Grande/Extremo Sur de Texas es Aqui!
- New: May-July 2026 Outlook: Hotter than normal temperatures are favored to continue into the upcoming summer season; precipitation remains a toss-up; drought, heat risk increases, occasional heavy rain/flooding, & water supply issues remain in focus
Current conditions at
Harlingen, Rio Grande Valley International Airport (KHRL)
Lat: 26.23°NLon: 97.66°WElev: 33ft.
Mostly Cloudy
93°F
34°C
| Humidity | 60% |
| Wind Speed | SE 20 G 30 mph |
| Barometer | 29.75 in (1007.3 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 107°F (42°C) |
| Last update | 18 May 4:52 pm CDT |
Extended Forecast for
Sebastian TX
This Afternoon
High: 96 °F
Mostly Sunny
and WindyTonight
Low: 79 °F
Mostly Cloudy
and Breezy
then Mostly
CloudyTuesday
High: 95 °F
Partly Sunny
and BreezyTuesday Night
Low: 79 °F
Mostly Cloudy
then Chance
ShowersWednesday
High: 93 °F
Partly Sunny
Wednesday Night
Low: 77 °F
Mostly Cloudy
Thursday
High: 90 °F
Showers
LikelyThursday Night
Low: 75 °F
Chance
T-storms then
Showers
LikelyFriday
High: 90 °F
Chance
T-storms
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 96. Heat index values as high as 108. Windy, with a south southeast wind around 28 mph, with gusts as high as 39 mph.
Tonight
Mostly cloudy, with a low around 79. Breezy, with a southeast wind 13 to 20 mph, with gusts as high as 31 mph.
Tuesday
Partly sunny, with a high near 95. Heat index values as high as 108. Breezy, with a southeast wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 79. Southeast wind 10 to 16 mph, with gusts as high as 26 mph.
Wednesday
Partly sunny, with a high near 93. Southeast wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly cloudy, with a low around 77. East southeast wind 8 to 14 mph, with gusts as high as 22 mph.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 90. South southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. Southeast wind 7 to 13 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 90. South southeast wind 6 to 13 mph, with gusts as high as 22 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. Southeast wind 7 to 10 mph. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Mostly cloudy, with a high near 89. South southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sebastian TX
26.35°N 97.8°W
26.35°N 97.8°W
4:45 pm CDT May 18, 2026
4pm CDT May 18, 2026-6pm CDT May 24, 2026
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