Port Arthur Reservoir Weather Forecast

    • 63
    • 76

    Chance Rain Showers

    • 61
    • 74

    Chance Rain Showers

    • 59
    • 74

    Partly Sunny

    • 59
    • 73

    Partly Sunny

    • 60
    • 74

    Mostly Sunny

    • 61
    • 75

    Mostly Cloudy

Today 21 Dec Lower Jefferson

Mostly cloudy this Morning, then becoming partly sunny. Patchy dense fog this morning. A 20 percent chance of Showers. Highs in the mid 70s. South Winds around 5 Mph.

Tonight 21 Dec Lower Jefferson

Mostly cloudy. Patchy fog in the Evening, then widespread fog after midnight. Lows in the lower 60s. East Winds around 5 Mph.

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Port Arthur Reservoir Temperature Statistics

December Temperature

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

  • Lowest 15 December, 2025

    28.9 °F

  • Average December

    53.1 °F

  • Highest 12 December, 2025

    80.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    62.1 °F

  • Average 2020–2025

    70.6 °F

  • Average High 2020–2025

    80.7 °F
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