Weather in Port Arthur, TX
Updated 2026-08-11 12:45 local time · ZIP codes 77640, 77642
Partly cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
90°5% rain
95°4% rain94°4% rain96°3% rain95°2% rain92°3% rain90°3% rain
87°5% rain85°6% rain84°8% rain83°8% rain80°8% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 8%).
It feels like 99°F with winds near 8 mph.
87°F, 5% rain chance and 8 mph wind.
Visibility is around 10 mi; gusts may reach 14 mph.
Current temperature is 90°F, wind 8 mph, rain chance up to 8%.
UV index is 10. Use shade, sunscreen, a hat and sunglasses.
Port Arthur weather today
Partly cloudy and 90°F in Port Arthur, TX. Today's high is 96°F with a 9% rain chance. Winds are around 8 mph with gusts near 9 mph. Relative humidity is 71%, pressure is 30.11 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Port Arthur
Sunrise is at 06:40 AM and sunset is at 08:00 PM. Tomorrow's forecast calls for Sunny with a high near 91°F and a low near 80°F. The maximum rain chance is 57%.