News Headlines
- 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.
Partly Cloudy
89°F
32°C
| Humidity | 69% |
| Wind Speed | SE 16 G 22 mph |
| Barometer | 29.96 in |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 102°F (39°C) |
| Last update | 14 Oct 10:35 am CDT |
Extended Forecast for
Mercedes TX
Today

High: 95 °F
Mostly Sunny
Tonight

Low: 74 °F
Mostly Clear
Thursday

High: 93 °F
Sunny
Thursday Night

Low: 71 °F
Mostly Clear
Friday
High: 89 °F
Slight Chance
Showers then
Chance
Showers and
BreezyFriday Night
Low: 65 °F
Breezy.
Slight Chance
T-storms then
Slight Chance
ShowersSaturday

High: 76 °F
Slight Chance
Showers and
BreezySaturday Night
Low: 61 °F
Mostly Cloudy
then Slight
Chance
ShowersSunday

High: 81 °F
Mostly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 95. Heat index values as high as 107. Southeast wind 14 to 17 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 74. Southeast wind 9 to 15 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 93. East southeast wind 8 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 71. East wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Breezy, with a north wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Breezy, with a north wind 17 to 24 mph, with gusts as high as 45 mph. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 76. Breezy, with a north wind 15 to 22 mph, with gusts as high as 45 mph.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61. North wind 6 to 10 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 81. North northwest wind around 11 mph, with gusts as high as 26 mph.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 66. Northeast wind 5 to 9 mph becoming light north northeast.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 86. North wind around 9 mph, with gusts as high as 21 mph.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 70.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Mercedes TX
26.14°N 97.93°W
26.14°N 97.93°W
10:45 am CDT Oct 14, 2026
10am CDT Oct 14, 2026-6pm CDT Oct 20, 2026


