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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!
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

69°F

21°C

Humidity	58%
Wind Speed	N 9 mph
Barometer	30.20 in
Dewpoint	54°F (12°C)
Visibility	10.00 mi
Last update	19 Oct 9:35 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Mercedes TX

Today
High: 85 °F
Partly Sunny
Tonight
Low: 71 °F
Decreasing
Clouds
Tuesday
High: 89 °F
Sunny then
Slight Chance
Showers
Tuesday Night
Low: 71 °F
Mostly Clear
Wednesday
High: 89 °F
Chance
Showers
Wednesday Night
Low: 70 °F
Mostly Clear
Thursday
High: 88 °F
Sunny
Thursday Night
Low: 67 °F
Clear
Friday
High: 90 °F
Sunny

Detailed Forecast

Today

Partly sunny, with a high near 85. North northeast wind 7 to 10 mph, with gusts as high as 20 mph.

Tonight

Mostly cloudy, then gradually becoming mostly clear, with a low around 71. Northeast wind 6 to 11 mph becoming light north northeast. Winds could gust as high as 20 mph.

Tuesday

A slight chance of showers between 3pm and 4pm. Increasing clouds, with a high near 89. North wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Tuesday Night

Mostly clear, with a low around 71. Northeast wind 6 to 11 mph becoming light north northeast. Winds could gust as high as 21 mph.

Wednesday

A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly sunny, with a high near 89. North northwest wind 6 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

Wednesday Night

Mostly clear, with a low around 70. East northeast wind 6 to 11 mph becoming light in the evening. Winds could gust as high as 21 mph.

Thursday

Sunny, with a high near 88. Light north northeast wind becoming east northeast 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

Thursday Night

Clear, with a low around 67. East wind 6 to 11 mph becoming light in the evening. Winds could gust as high as 21 mph.

Friday

Sunny, with a high near 90. Light east northeast wind becoming east southeast 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

Friday Night

Mostly clear, with a low around 70. East southeast wind 5 to 13 mph, with gusts as high as 23 mph.

Saturday

Sunny, with a high near 90. East southeast wind 5 to 13 mph, with gusts as high as 24 mph.