Port Arthur, TX Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Port Arthur, TX in one place.
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 88. Heat index values as high as 100. Southeast wind 5 to 15 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Port Arthur, TX is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 12, 2026 4:36 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Port Arthur, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 4:36 AM CDT
- Forecast office
- LCH
- Source
- NOAA / NWS
Daily Outlook
This Week in Port Arthur
Tuesday looks like the warmest upcoming period in Port Arthur at 88 degrees F.
Saturday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Friday Night at about 15 to 20 mph N.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 4:36 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LCH
- Radar station
- KLCH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 76. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Sunny, with a high near 88. Southeast wind 5 to 10 mph.
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.
Sunny, with a high near 88. Southeast wind 5 to 10 mph.
Mostly clear, with a low around 73. East wind 0 to 5 mph.
Sunny, with a high near 87.
Partly cloudy, with a low around 64.
Sunny, with a high near 76.
Mostly clear, with a low around 60.
Sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Chance Showers And Thunderstorms
|
88°F |
5 to 15 mph
SE
|
|
Tuesday Night
Oct 13
|
Chance Showers And Thunderstorms then Mostly Clear
|
76°F |
5 to 10 mph
SE
|
|
Wednesday
Oct 14
|
Sunny
|
88°F |
5 to 10 mph
SE
|
|
Wednesday Night
Oct 14
|
Mostly Clear
|
74°F |
5 to 10 mph
SE
|
|
Thursday
Oct 15
|
Sunny
|
88°F |
5 to 10 mph
SE
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
73°F |
0 to 5 mph
E
|
|
Friday
Oct 16
|
Sunny
|
87°F |
5 to 15 mph
NE
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
64°F |
15 to 20 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
76°F |
15 to 20 mph
NE
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
60°F |
10 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
78°F |
5 to 10 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Arthur.
