Geismar Weather Forecast

    • 73
    • 96

    Mostly Sunny

    • 71
    • 94

    Slight Chance Thunderstorms

    • 71
    • 90

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 72
    • 92

    Chance Thunderstorms

    • 70
    • 88

    Chance Thunderstorms

Today 25 Aug Western Ascension

Sunny. Near steady temperature in the lower 90s. East Winds around 5 Mph.

Tonight 25 Aug Western Ascension

Mostly clear. Lows in the lower 70s. South Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Geismar Temperature Statistics

August Temperature

Baton Rouge, Baton Rouge Metropolitan, Ryan Field (23 miles)

  • Lowest 4 August, 2025

    71.7 °F

  • Average August

    84.4 °F

  • Highest 21 August, 2025

    99.6 °F

Climate (2020–Present)

Baton Rouge, Baton Rouge Metropolitan, Ryan Field (23 miles)

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  • Average Low 2020–2025

    60.4 °F

  • Average 2020–2025

    70.3 °F

  • Average High 2020–2025

    80.9 °F
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