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- WE ARE HIRING: NWS Brownsville/Rio Grande Valley is officially hiring a GS-5/7/9 Meteorologist. Apply today at USAJobs!
- October 1-7 Rainfall Improves Long-Term Drought, but Severe to Extreme Conditions Remain for Some. Click Here for Details.
- New: October-December2026 Outlook - After a brutally hot and dry September, October brings the pattern change to wetter and less hot, with above average rainfall to close out 2026; flash flooding, water supply, & hazardous marine conditions in focus
Current conditions at
Mid Valley Airport (KTXW)
Lat: 26.18°NLon: 97.97°WElev: 70ft.
Fair
79°F
26°C
| Humidity | 83% |
| Wind Speed | NE 3 mph |
| Barometer | 29.93 in |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 8 Oct 9:55 pm CDT |
Extended Forecast for
Mercedes TX
Tonight
Low: 71 °F
Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 70 °F
Clear
Saturday
High: 91 °F
Sunny
Saturday Night
Low: 72 °F
Mostly Clear
Sunday
High: 91 °F
Sunny
Sunday Night
Low: 75 °F
Mostly Clear
Columbus Day
High: 93 °F
Mostly Sunny
Monday Night
Low: 77 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 71. Calm wind becoming north northwest around 5 mph after midnight.
Friday
Sunny, with a high near 91. North northeast wind 6 to 10 mph, with gusts as high as 21 mph.
Friday Night
Clear, with a low around 70. Northeast wind 5 to 9 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. Calm wind becoming east 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 72. East wind 5 to 9 mph becoming light east southeast.
Sunday
Sunny, with a high near 91. East southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 75. East southeast wind 6 to 11 mph.
Columbus Day
Mostly sunny, with a high near 93. Southeast wind 6 to 14 mph.
Monday Night
Mostly clear, with a low around 77. Southeast wind 8 to 13 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94. South southeast wind 8 to 16 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 78. Southeast wind 10 to 14 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Sunny, with a high near 94.
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
10:00 pm CDT Oct 8, 2026
10pm CDT Oct 8, 2026-6pm CDT Oct 15, 2026
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