News Headlines
- New: Spring (March to May) 2025 RGV Weather Summary: A State of Heat and Drought, Broken by a Devastating Flood
- New: Summer 2025 Outlook - The Heat Is On, Water Resource Issues May Worsen, and Limited Opportunities for Tropical Rains
- New! The 2025 Rio Grande Valley/Deep South Texas Hurricane Guide is Here
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- Take Advantage of May (and June) to Be Ready for the 2025 Atlantic Hurricane Season!
Current conditions at
Mid Valley Airport (KTXW)
Lat: 26.18°NLon: 97.97°WElev: 70ft.
Partly Cloudy
95°F
35°C
| Humidity | 46% |
| Wind Speed | SE 15 G 21 mph |
| Barometer | 29.95 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 103°F (39°C) |
| Last update | 15 Jun 2:55 pm CDT |
Extended Forecast for
Mercedes TX
This Afternoon
High: 98 °F
Slight Chance
T-stormsTonight
Low: 78 °F
Slight Chance
T-stormsMonday
High: 97 °F
Sunny then
Slight Chance
T-stormsMonday Night
Low: 77 °F
Mostly Clear
Tuesday
High: 97 °F
Sunny
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 96 °F
Sunny
Wednesday Night
Low: 77 °F
Mostly Clear
then Chance
ShowersJuneteenth
High: 87 °F
Showers
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 98. Heat index values as high as 107. Southeast wind around 15 mph, with gusts as high as 25 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 78. Southeast wind 7 to 14 mph, with gusts as high as 23 mph.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 97. Heat index values as high as 106. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 77. South southeast wind 8 to 14 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 97. South southeast wind 8 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 78. South southeast wind 10 to 16 mph, with gusts as high as 26 mph.
Wednesday
Sunny, with a high near 96. South southeast wind 10 to 17 mph, with gusts as high as 29 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. Southeast wind 7 to 16 mph, with gusts as high as 28 mph.
Juneteenth
Showers and possibly a thunderstorm. High near 87. East southeast wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. East southeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 88. East southeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Saturday
Showers and thunderstorms likely. Mostly cloudy, with a high near 89. Chance of precipitation is 60%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mercedes TX
26.14°N 97.93°W
26.14°N 97.93°W
3:00 pm CDT Jun 15, 2025
3pm CDT Jun 15, 2025-6pm CDT Jun 21, 2025
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