News Headlines
- New: August-October 2026 Outlook - Hotter Than Normal And Mainly Dry Conditions Are Expected To Continue; Could Turn Wetter Towards The Fall; Heat Risk, Drought, Fire Weather, And Water Supply Issues Remain In Focus
- WE ARE HIRING: NWS Brownsville/Rio Grande Valley is officially hiring a GS-5/7/9 Meteorologist. Apply today at USAJobs!
- Notice: Rio Grande City NOAA Weather Radio Remains Out of Service Until Further Notice
- Check Out the 2026 Rio Grande Valley/Deep South Texas Hurricane Guide
- Guia de Huracanes 2026 del Valle del Rio Grande/Extremo Sur de Texas
Current conditions at
Mid Valley Airport (KTXW)
Lat: 26.18°NLon: 97.97°WElev: 70ft.
Fair
76°F
24°C
| Humidity | 88% |
| Wind Speed | Calm |
| Barometer | 29.84 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 76°F (24°C) |
| Last update | 2 Aug 10:15 pm CDT |
Extended Forecast for
3 Miles ENE Mercedes TX
Tonight
Low: 77 °F
Partly Cloudy
Monday
High: 100 °F
Hot
Monday Night
Low: 78 °F
Mostly Clear
Tuesday
High: 100 °F
Mostly Sunny
then Sunny
and BreezyTuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 99 °F
Sunny
Wednesday Night
Low: 78 °F
Mostly Clear
Thursday
High: 99 °F
Sunny then
Slight Chance
T-stormsThursday Night
Low: 78 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 77. South wind 6 to 10 mph, with gusts as high as 21 mph.
Monday
Sunny and hot, with a high near 100. Heat index values as high as 107. South southeast wind 6 to 15 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind 10 to 16 mph, with gusts as high as 26 mph.
Tuesday
Sunny and hot, with a high near 100. Heat index values as high as 108. Breezy, with a south southeast wind 10 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 78. Southeast wind 8 to 17 mph, with gusts as high as 28 mph.
Wednesday
Sunny, with a high near 99. Southeast wind 8 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 78. Southeast wind 7 to 16 mph, with gusts as high as 26 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 99. Southeast wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 78. Southeast wind 5 to 15 mph, with gusts as high as 26 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 98. Light southeast wind becoming east southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Friday Night
Mostly clear, with a low around 77. East southeast wind 9 to 14 mph becoming light southeast after midnight. Winds could gust as high as 23 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 98.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny, with a high near 98.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles ENE Mercedes TX
26.16°N 97.88°W
26.16°N 97.88°W
10:45 pm CDT Aug 2, 2026
10pm CDT Aug 2, 2026-6pm CDT Aug 9, 2026
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