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
- Notice: Rio Grande City NOAA Weather Radio Remains Out of Service Until Further Notice
- Check Out the 2026 Rio Grande Valley/Deep South Texas Hurricane Guide
Current conditions at
Harlingen, Rio Grande Valley International Airport (KHRL)
Lat: 26.23°NLon: 97.66°WElev: 33ft.
Fair
80°F
27°C
| Humidity | 90% |
| Wind Speed | S 7 mph |
| Barometer | 29.94 in (1013.7 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 86°F (30°C) |
| Last update | 12 Aug 4:52 am CDT |
Extended Forecast for
Harlingen TX
Today
High: 100 °F
Sunny then
Sunny and
BreezyTonight
Low: 80 °F
Mostly Clear
Thursday
High: 100 °F
Sunny then
Sunny and
BreezyThursday Night
Low: 81 °F
Mostly Clear
and Breezy
then Mostly
ClearFriday
High: 99 °F
Sunny then
Slight Chance
T-stormsFriday Night
Low: 80 °F
Partly Cloudy
Saturday
High: 99 °F
Mostly Sunny
Saturday Night
Low: 78 °F
Mostly Clear
Sunday
High: 99 °F
Sunny then
Slight Chance
T-storms
Detailed Forecast
Today
Sunny and hot, with a high near 100. Heat index values as high as 108. Breezy, with a south southeast wind 9 to 18 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 80. South southeast wind 11 to 17 mph, with gusts as high as 30 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 110. Breezy, with a south southeast wind 11 to 18 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 81. Breezy, with a southeast wind 9 to 18 mph, with gusts as high as 30 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 99. South southeast wind 10 to 17 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 80. South southeast wind 8 to 16 mph, with gusts as high as 28 mph.
Saturday
Mostly sunny, with a high near 99. Southeast wind 8 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 78. East southeast wind 10 to 15 mph becoming light southeast after midnight. Winds could gust as high as 24 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 99. Light east southeast wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 78. East southeast wind 8 to 13 mph becoming light south southeast after midnight. Winds could gust as high as 22 mph.
Monday
Sunny, with a high near 99. Light east southeast wind becoming east 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny, with a high near 99.
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
5:18 am CDT Aug 12, 2026
5am CDT Aug 12, 2026-6pm CDT Aug 18, 2026
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