Port Arthur Reservoir Weather Forecast

    • 55
    • 71

    Mostly Sunny

    • 59
    • 76

    Mostly Sunny

    • 62
    • 80

    Mostly Sunny

    • 64
    • 80

    Mostly Sunny

    • 63
    • 82

    Mostly Sunny

    • 62
    • 83

    Mostly Sunny

Today 18 Mar Lower Jefferson

Sunny. Not as cool with Highs in the upper 60s. South Winds 5 to 10 Mph.

Tonight 18 Mar Lower Jefferson

Mostly clear. Lows in the mid 50s. South Winds 5 to 10 Mph.

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Port Arthur Reservoir Temperature Statistics

March Temperature

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

  • Lowest 16 March, 2026

    39.9 °F

  • Average March

    68.9 °F

  • Highest 4 March, 2026

    82.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    62.3 °F

  • Average 2021–2026

    70.9 °F

  • Average High 2021–2026

    81 °F
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