Port Arthur Weather Forecast
- 75
- 93
Increasing Clouds
- 74
- 91
Partly Sunny
- 74
- 91
Partly Sunny
- 74
- 92
Mostly Sunny
- 74
- 92
Mostly Sunny
- 73
- 91
Mostly Sunny
Today 13 Sep Lower Jefferson
Sunny. Highs in the lower 90s. North Winds around 5 Mph, becoming south in the afternoon.
Tonight 13 Sep Lower Jefferson
Partly cloudy. Lows in the mid 70s. Southwest Winds around 5 Mph.
Port Arthur Temperature Statistics
September Temperature
Beaumont/Port Arthur Southeast Texas Regional Airport (6.8 miles)
Lowest 9 September, 2025
61 °FAverage September
80.1 °FHighest 3 September, 2025
93.9 °F
Climate (2020–Present)
Beaumont/Port Arthur Southeast Texas Regional Airport (6.8 miles)
Average Low 2020–2025
62 °FAverage 2020–2025
70.4 °FAverage High 2020–2025
80.5 °F