Port Isabel, TX

Current conditions, hourly and 7-day forecast, and live radar for Port Isabel, TX 78578. Right now: partly cloudy, 79°F. Data from the National Weather Service.

• Tonight: Partly cloudy, with a low around 79. Southeast wind 2 to 10 mph.
• Thursday: Mostly sunny. High near 95, with temperatures falling to around 91 in the afternoon. Heat index values as high as 107. South southeast wind 2 to 14 mph.
• Thursday Night: Mostly clear, with a low around 80. South southeast wind 8 to 14 mph.
• Friday: Sunny. High near 96, with temperatures falling to around 92 in the afternoon. Heat index values as high as 108. South southeast wind 8 to 18 mph.
• Friday Night: Mostly clear, with a low around 81. South southeast wind 12 to 18 mph.
• Saturday: Sunny. High near 96, with temperatures falling to around 92 in the afternoon. South southeast wind 10 to 20 mph.