News Headlines
- WE ARE HIRING: NWS Brownsville/Rio Grande Valley is officially hiring a GS-5/7/9 Meteorologist. Apply today at USAJobs!
- Hot, Windy, and Rain-Free Weather Since Late June Brought on a Rapid-Onset Drought to Portions of the RGV in Early August
- 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
Current conditions at
Mid Valley Airport (KTXW)
Lat: 26.18°NLon: 97.97°WElev: 70ft.
Fair
83°F
28°C
| Humidity | 67% |
| Wind Speed | SE 12 mph |
| Barometer | 30.00 in |
| Dewpoint | 71°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 88°F (31°C) |
| Last update | 23 Aug 10:55 pm CDT |
Extended Forecast for
Mercedes TX
Tonight
Low: 77 °F
Mostly Clear
Monday
High: 102 °F
Hot
Monday Night
Low: 78 °F
Mostly Clear
Tuesday
High: 102 °F
Hot
Tuesday Night
Low: 78 °F
Clear
Wednesday
High: 102 °F
Hot
Wednesday Night
Low: 78 °F
Clear
Thursday
High: 102 °F
Hot
Thursday Night
Low: 79 °F
Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 77. South southeast wind 6 to 9 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 102. Heat index values as high as 108. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind 7 to 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny and hot, with a high near 102. Heat index values as high as 109. Southeast wind 6 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Clear, with a low around 78. Southeast wind 7 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny and hot, with a high near 102. South southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Clear, with a low around 78. Southeast wind 7 to 15 mph, with gusts as high as 24 mph.
Thursday
Sunny and hot, with a high near 102. South southeast wind 5 to 11 mph.
Thursday Night
Clear, with a low around 79. Southeast wind 7 to 14 mph, with gusts as high as 24 mph.
Friday
Sunny and hot, with a high near 102. South southeast wind 6 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 78. East southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Saturday
Sunny and hot, with a high near 101.
Saturday Night
Mostly clear, with a low around 79.
Sunday
Sunny and hot, with a high near 100.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mercedes TX
26.16°N 97.93°W
26.16°N 97.93°W
11:00 pm CDT Aug 23, 2026
11pm CDT Aug 23, 2026-6pm CDT Aug 30, 2026
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