78575 Weather (Brownsville, TX)

Weather forecast for: Brownsville TX

Last Update: 5:00 pm CDT Sep 8, 2026

This Afternoon: Sunny, with a steady temperature around 93. Heat index values as high as 105. East southeast wind around 13 mph, with gusts as high as 22 mph.

Tonight: Mostly clear, with a low around 81. East southeast wind 6 to 11 mph becoming light southeast after midnight. Winds could gust as high as 21 mph.

Wednesday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 3pm. Sunny, with a high near 97. Heat index values as high as 108. Calm wind becoming east southeast 5 to 9 mph in the morning.

Wednesday Night: Mostly clear, with a low around 80. East southeast wind 5 to 9 mph becoming light southeast after midnight.

Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 98. Light south southeast wind becoming southeast 5 to 10 mph in the afternoon.

Thursday Night: Mostly clear, with a low around 81. Southeast wind 8 to 11 mph, with gusts as high as 20 mph.

Friday: Sunny, with a high near 98. South wind 7 to 14 mph, with gusts as high as 24 mph.

Friday Night: Mostly clear, with a low around 82. South southeast wind 11 to 15 mph, with gusts as high as 25 mph.

Saturday: Sunny, with a high near 98. South southeast wind 11 to 17 mph, with gusts as high as 29 mph.

Saturday Night: Mostly clear, with a low around 82. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.

Sunday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 97. South southeast wind 9 to 16 mph, with gusts as high as 28 mph.

Sunday Night: Mostly clear, with a low around 82.

Monday: Mostly sunny, with a high near 97.

Monday Night: Mostly clear, with a low around 81.

Tuesday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 97.