Port Arthur Reservoir Weather Forecast

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    Hot

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    Hot

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    Hot

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    Hot

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    Slight Chance Thunderstorms

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    Slight Chance Thunderstorms

Today 23 Aug Lower Jefferson

Sunny. Highs in the upper 90s. West Winds around 5 Mph, becoming south this afternoon. Heat index Values up to 110.

Tonight 23 Aug Lower Jefferson

Partly cloudy in the Evening, then clearing. Humid with Lows in the upper 70s. Southwest Winds 5 to 10 Mph.

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Port Arthur Reservoir Temperature Statistics

August Temperature

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

  • Lowest 17 August, 2026

    72.6 °F

  • Average August

    85.5 °F

  • Highest 20 August, 2026

    98.1 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    62.5 °F

  • Average 2021–2026

    71.2 °F

  • Average High 2021–2026

    81.3 °F
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