News Headlines
- WE ARE HIRING: NWS Brownsville/Rio Grande Valley is officially hiring a GS-5/7/9 Meteorologist. Apply today at USAJobs!
- New: Hot, Windy, and Rain-Free Weather Since Late June Brought on a Rapid-Onset Drought to Portions of the RGV in Early August
- New: August-October 2026 Outlook - Hotter Than Normal And Mainly Dry Conditions Are Expected To Continue; Could Turn Wetter Towards The Fall; Heat Risk, Drought, Fire Weather, And Water Supply Issues Remain In Focus
- Check Out the 2026 Rio Grande Valley/Deep South Texas Hurricane Guide
- Guia de Huracanes 2026 del Valle del Rio Grande/Extremo Sur de Texas
Hazardous Weather Conditions
Current conditions at
Harlingen, Rio Grande Valley International Airport (KHRL)
Lat: 26.23°NLon: 97.66°WElev: 33ft.
Fair
77°F
25°C
| Humidity | 94% |
| Wind Speed | SE 5 mph |
| Barometer | 30.06 in (1017.8 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 16 Aug 5:52 am CDT |
Extended Forecast for
Harlingen TX
Today
High: 99 °F
Sunny
Tonight
Low: 78 °F
Mostly Clear
Monday
High: 98 °F
Sunny then
Chance
T-stormsMonday Night
Low: 78 °F
Mostly Clear
Tuesday
High: 100 °F
Hot
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 100 °F
Hot
Wednesday Night
Low: 79 °F
Mostly Clear
Thursday
High: 101 °F
Hot
Detailed Forecast
Today
Sunny, with a high near 99. Heat index values as high as 110. Light southeast wind becoming east 9 to 14 mph in the morning. Winds could gust as high as 23 mph.
Tonight
Mostly clear, with a low around 78. East southeast wind 9 to 14 mph becoming light southeast after midnight. Winds could gust as high as 23 mph.
Monday
A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 98. Heat index values as high as 109. Light east wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 78. East southeast wind 5 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny and hot, with a high near 100. Light south southeast wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 78. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.
Wednesday
Sunny and hot, with a high near 100. Southeast wind 5 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 79. Southeast wind 8 to 15 mph, with gusts as high as 24 mph.
Thursday
Sunny and hot, with a high near 101. South southeast wind 7 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 79. Southeast wind 9 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny and hot, with a high near 101. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 78.
Saturday
Sunny and hot, with a high near 101.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Harlingen TX
26.19°N 97.7°W
26.19°N 97.7°W
6:18 am CDT Aug 16, 2026
6am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
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