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
82°F
28°C
| Humidity | 75% |
| Wind Speed | S 7 mph |
| Barometer | 29.98 in |
| Dewpoint | 74°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 88°F (31°C) |
| Last update | 27 Aug 12:55 am CDT |
Extended Forecast for
4 Miles SE Mercedes TX
Overnight
Low: 78 °F
Mostly Clear
Thursday
High: 100 °F
Hot
Thursday Night
Low: 78 °F
Mostly Clear
Friday
High: 100 °F
Hot
Friday Night
Low: 77 °F
Clear
Saturday
High: 99 °F
Sunny
Saturday Night
Low: 78 °F
Mostly Clear
Sunday
High: 99 °F
Sunny
Sunday Night
Low: 78 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 78. South southeast wind around 7 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 107. Light southeast wind becoming east southeast 6 to 11 mph in the morning.
Thursday Night
Mostly clear, with a low around 78. South southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 106. Light south southeast wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Clear, with a low around 77. South southeast wind 5 to 14 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 99. Light southeast wind becoming east southeast 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 78. East southeast wind 6 to 13 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 99. Southeast wind 5 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 78. Southeast wind 9 to 15 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 98. South southeast wind 10 to 16 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind 9 to 16 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 98.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 98.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SE Mercedes TX
26.09°N 97.87°W
26.09°N 97.87°W
1:00 am CDT Aug 27, 2026
1am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
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