Round Lake Weather Forecast

    • 78
    • 91

    Mostly Sunny

    • 78
    • 91

    Slight Chance Thunderstorms

    • 78
    • 91

    Slight Chance Thunderstorms

    • 79
    • 94

    Mostly Sunny

    • 77
    • 93

    Mostly Sunny

    • 76
    • 91

    Mostly Sunny

Today 19 Sep Lower Jefferson

Sunny. Highs around 90. Northeast Winds 5 to 10 Mph, becoming southeast in the afternoon.

Tonight 19 Sep Lower Jefferson

Mostly clear. Humid with Lows in the mid 70s. Southeast Winds around 5 Mph.

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Round Lake Temperature Statistics

September Temperature

Beaumont/Port Arthur Southeast Texas Regional Airport (11.2 miles)

  • Lowest 7 September, 2026

    74.6 °F

  • Average September

    84.4 °F

  • Highest 14 September, 2026

    96.7 °F

Climate (2021–2026)

Beaumont/Port Arthur Southeast Texas Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    62.6 °F

  • Average 2021–2026

    71.3 °F

  • Average High 2021–2026

    81.4 °F
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