Port Arthur, TX

Current conditions, hourly and 7-day forecast, and live radar for Port Arthur, TX 77640. Right now: partly cloudy, 77°F. Data from the National Weather Service.

• Tonight: Partly cloudy, with a low around 77. Southeast wind around 0 mph.
• Thursday: A chance of showers and thunderstorms after 9am. Mostly sunny, with a high near 89. Heat index values as high as 99. East wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
• Thursday Night: A chance of showers and thunderstorms before 7pm, then patchy fog and a chance of showers and thunderstorms. Mostly clear, with a low around 76. Heat index values as high as 97. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
• Friday: A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 88. Heat index values as high as 99. Southwest wind 0 to 5 mph. Chance of precipitation is 70%.
• Friday Night: Showers and thunderstorms likely before 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind 0 to 5 mph. Chance of precipitation is 70%.
• Saturday: A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 88. South wind 0 to 10 mph. Chance of precipitation is 70%.