Port Arthur Reservoir Weather Forecast

    • 42
    • 58

    Increasing Clouds

    • 47
    • 60

    Mostly Cloudy

    • 38
    • 68

    Mostly Sunny

    • 39
    • 55

    Sunny

    • 41
    • 65

    Partly Sunny

    • 37
    • 59

    Partly Sunny

Today 12 Jan Lower Jefferson

Mostly sunny. Highs in the upper 50s. Northeast Winds 5 to 10 Mph.

Tonight 12 Jan Lower Jefferson

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 40s. Northeast Winds around 5 Mph.

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Port Arthur Reservoir Temperature Statistics

January Temperature

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

  • Lowest 1 January, 2026

    37.9 °F

  • Average January

    65.2 °F

  • Highest 9 January, 2026

    81 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    62.2 °F

  • Average 2021–2026

    70.7 °F

  • Average High 2021–2026

    80.8 °F
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