Port Arthur Reservoir Weather Forecast

    • 76
    • 89

    Chance Thunderstorms

    • 77
    • 91

    Slight Chance Thunderstorms

    • 77
    • 91

    Chance Thunderstorms

    • 76
    • 88

    Thunderstorms Likely

    • 76
    • 88

    Chance Thunderstorms

    • 76
    • 89

    Chance Thunderstorms

Today 6 Sep Lower Jefferson

Mostly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. North Winds around 5 Mph, becoming south this afternoon. Chance of rain 50 percent.

Tonight 6 Sep Lower Jefferson

Mostly clear. Humid with Lows in the mid 70s. West Winds around 5 Mph.

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  • Temperature Real-Time

Port Arthur Reservoir Temperature Statistics

September Temperature

Beaumont/Port Arthur Southeast Texas Regional Airport (4.3 miles)

  • Lowest 3 September, 2026

    75.7 °F

  • Average September

    82.4 °F

  • Highest 3 September, 2026

    90.6 °F

Climate (2021–2026)

Beaumont/Port Arthur Southeast Texas Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    62.5 °F

  • Average 2021–2026

    71.2 °F

  • Average High 2021–2026

    81.3 °F
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