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- 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
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Current conditions at
Mid Valley Airport (KTXW)
Lat: 26.18°NLon: 97.97°WElev: 70ft.
Thunderstorm in Vicinity
83°F
28°C
| Humidity | 89% |
| Wind Speed | SE 7 mph |
| Barometer | 29.88 in |
| Dewpoint | 79°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 94°F (34°C) |
| Last update | 20 Jun 8:55 am CDT |
Extended Forecast for
Mercedes TX
Today
High: 93 °F
Chance
T-stormsTonight
Low: 80 °F
Slight Chance
T-stormsSunday
High: 95 °F
Partly Sunny
then Sunny
and BreezySunday Night
Low: 80 °F
Mostly Clear
Monday
High: 96 °F
Sunny and
BreezyMonday Night
Low: 80 °F
Clear and
Breezy then
Partly CloudyTuesday
High: 96 °F
Sunny
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 96 °F
Sunny
Detailed Forecast
Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 93. Heat index values as high as 108. Southeast wind 9 to 13 mph, with gusts as high as 21 mph.
Tonight
A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 80. South southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 95. Heat index values as high as 110. Breezy, with a south southeast wind 11 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 80. South southeast wind 15 to 17 mph, with gusts as high as 31 mph.
Monday
Sunny, with a high near 96. Breezy, with a south southeast wind 16 to 20 mph, with gusts as high as 32 mph.
Monday Night
Mostly clear, with a low around 80. Breezy, with a south southeast wind 11 to 18 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 96. South southeast wind 11 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 78. Southeast wind 9 to 16 mph, with gusts as high as 26 mph.
Wednesday
Sunny, with a high near 96. South southeast wind 8 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 76. Southeast wind 7 to 15 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 96. South southeast wind 7 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Mostly clear, with a low around 77.
Friday
Sunny, with a high near 96. Breezy.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mercedes TX
26.16°N 97.9°W
26.16°N 97.9°W
9:18 am CDT Jun 20, 2026
9am CDT Jun 20, 2026-6pm CDT Jun 26, 2026
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