Port Arthur Reservoir Weather Forecast

    • 37
    • 55

    Decreasing Clouds

    • 33
    • 54

    Mostly Sunny

    • 44
    • 61

    Mostly Sunny

    • 57
    • 69

    Mostly Cloudy

    • 57
    • 74

    Partly Sunny

    • 50
    • 72

    Mostly Sunny

Today 29 Dec Lower Jefferson

Mostly cloudy in the Morning, then becoming mostly sunny. Breezy and much cooler with Highs in the mid 50s. North Winds 15 to 25 Mph.

Tonight 29 Dec Lower Jefferson

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 30s. North Winds 10 to 15 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

    57.4 °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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