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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
82°F
28°C
| Humidity | 89% |
| Wind Speed | SE 13 mph |
| Barometer | 29.95 in |
| Dewpoint | 78°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 91°F (33°C) |
| Last update | 12 Oct 11:55 pm CDT |
Extended Forecast for
Mercedes TX
Overnight
Low: 78 °F
Partly Cloudy
Tuesday
High: 96 °F
Mostly Sunny
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 95 °F
Mostly Sunny
then Slight
Chance
T-stormsWednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 92 °F
Sunny
Thursday Night
Low: 73 °F
Mostly Clear
Friday
High: 90 °F
Chance
Showers then
Chance
T-stormsFriday Night
Low: 69 °F
Breezy.
Slight Chance
T-storms then
Chance
Showers
Detailed Forecast
Overnight
Partly cloudy, with a low around 78. Southeast wind around 10 mph, with gusts as high as 23 mph.
Tuesday
Mostly sunny, with a high near 96. Heat index values as high as 108. South southeast wind 10 to 17 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly clear, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 28 mph.
Wednesday
A slight chance of showers and thunderstorms between 1pm and 2pm. Mostly sunny, with a high near 95. Heat index values as high as 107. Southeast wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 76. Southeast wind 10 to 16 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 92. East southeast wind 9 to 13 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 73. East wind 8 to 13 mph becoming light in the evening. Winds could gust as high as 22 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Sunny, with a high near 90. North northeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. Breezy, with a north wind 15 to 22 mph, with gusts as high as 41 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81. Breezy, with a north wind 15 to 21 mph, with gusts as high as 43 mph.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66. North wind 8 to 10 mph, with gusts as high as 23 mph.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 68.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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
12:11 am CDT Oct 13, 2026
12am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
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