Weather in Port Arthur, TX
Updated 2026-09-26 11:00 local time · ZIP codes 77640, 77642
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
84°18% rain85°21% rain86°18% rain87°13% rain
87°12% rain87°14% rain86°13% rain84°14% rain81°17% rain
80°18% rain
79°6% rain
78°11% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 21%).
It feels like 88°F with winds near 7 mph.
80°F, 18% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 17 mph.
Current temperature is 84°F, wind 7 mph, rain chance up to 21%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Port Arthur
Texas spans several climate zones, from humid Gulf Coast areas to dry western deserts and the High Plains. Heat, severe thunderstorms, tropical systems and winter cold outbreaks can all affect different parts of the state.
Port Arthur is part of the South weather region. The forecast point is near 29.90°N latitude and 93.93°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Port Arthur weather today
Patchy rain nearby and 84°F in Port Arthur, TX. Today's high is 87°F with a 41% rain chance. Winds are around 7 mph with gusts near 9 mph. Relative humidity is 61%, pressure is 30.02 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Port Arthur
Sunrise is at 07:06 AM and sunset is at 07:07 PM. Tomorrow's forecast calls for Overcast with a high near 92°F and a low near 74°F. The maximum rain chance is 8%.