Port Arthur Reservoir Weather Forecast

    • 58
    • 65

    Mostly Cloudy

    • 46
    • 74

    Partly Sunny

    • 50
    • 63

    Mostly Sunny

    • 62
    • 74

    Partly Sunny

    • 61
    • 75

    Mostly Cloudy

    • 59
    • 74

    Partly Sunny

    • 59
    • 74

    Partly Sunny

Today 17 Dec Lower Jefferson

A slight chance of Thunderstorms this morning. Cloudy with a chance of Showers. Highs in the mid 60s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 17 Dec Lower Jefferson

Mostly cloudy. A slight chance of Showers after midnight. Near steady temperature around 60. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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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

    51.9 °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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