Port Arthur Reservoir Weather Forecast

    • 77
    • 91

    Rain Showers Likely

    • 78
    • 90

    Rain Showers Likely

    • 78
    • 91

    Slight Chance Thunderstorms

    • 78
    • 92

    Mostly Sunny

    • 79
    • 93

    Mostly Sunny

    • 79
    • 93

    Mostly Sunny

Today 9 Aug Lower Jefferson

Mostly sunny with a chance of Thunderstorms. Showers Likely, mainly this morning. Highs around 90. Southeast Winds 5 to 10 Mph. Chance of rain 60 percent.

Tonight 9 Aug Lower Jefferson

Mostly clear. A slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Arthur Reservoir Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    74.6 °F

  • Average August

    85 °F

  • Highest 3 August, 2026

    97.6 °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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