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City of Brownsville, TexasBrownsville, TX Weather Forecast
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| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  | | | | | | | | |
| Chance of T-Storm | Clearing | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 99°FHi: 37°C | Lo: 80°FLo: 27°C | Hi: 100°FHi: 38°C | Lo: 80°FLo: 27°C | Hi: 99°FHi: 37°C | Lo: 80°FLo: 27°C | Hi: 99°FHi: 37°C | Lo: 80°FLo: 27°C | Hi: 99°FHi: 37°C | Lo: 80°FLo: 27°C |
| POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Wed Sep 09 2026 
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Issued: 539 PM CDT Wed Sep 9 2026
Key Messages
Updated at 539 PM CDT Wed Sep 9 2026- A Special Weather Statement has been issued for all of Deep South Texas for high heat indices between 108-111 degrees today.
- Record breaking temperatures and Major (level 3 of 4) to Extreme (level 4 of 4) Heat Risk is expected throughout much of Deep South Texas through the middle of next week.
- There is a low to moderate (20-40%) chance of sea breeze showers and thunderstorms E of I-69C today and tomorrow before conditions dry out for Friday and t...