Port Arthur Reservoir Weather Forecast

    • 70
    • 87

    Chance Thunderstorms

    • 59
    • 84

    Mostly Sunny

    • 67
    • 82

    Mostly Sunny

    • 62
    • 89

    Mostly Sunny

    • 60
    • 80

    Mostly Sunny

    • 67
    • 80

    Mostly Sunny

    • 65
    • 84

    Chance Rain Showers

Today 18 Oct Lower Jefferson

Mostly sunny with a chance of Showers. A slight chance of Thunderstorms this Morning, then a chance of Thunderstorms this afternoon. Highs in the upper 80s. South Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 18 Oct Lower Jefferson

Mostly clear. A chance of Showers with a slight chance of Thunderstorms this Evening, then a slight chance of Showers after midnight. Lows around 70. South Winds 5 to 10 Mph, becoming west after midnight. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Arthur Reservoir Temperature Statistics

October Temperature

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

  • Lowest 11 October, 2025

    60.1 °F

  • Average October

    76.5 °F

  • Highest 2 October, 2025

    91.9 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    62 °F

  • Average 2020–2025

    70.5 °F

  • Average High 2020–2025

    80.6 °F
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