Port Arthur Reservoir Weather Forecast

    • 77
    • 90

    Thunderstorms Likely

    • 75
    • 86

    Rain Showers

    • 75
    • 85

    Rain Showers

    • 77
    • 89

    Slight Chance Thunderstorms

    • 78
    • 92

    Slight Chance Thunderstorms

    • 78
    • 93

    Partly Sunny

Today 12 Jul Lower Jefferson

Showers likely. A chance of Thunderstorms this Morning, then Thunderstorms likely this afternoon. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 12 Jul Lower Jefferson

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

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Port Arthur Reservoir Temperature Statistics

July Temperature

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

  • Lowest 6 July, 2026

    71.7 °F

  • Average July

    84 °F

  • Highest 3 July, 2026

    94.6 °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

    71.1 °F

  • Average High 2021–2026

    81.3 °F
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