Herculaneum Weather Forecast

    • 23
    • 39

    Gradual Clearing

    • 23
    • 41

    Mostly Sunny

    • 39
    • 56

    Partly Sunny

    • 34
    • 65

    Mostly Sunny

    • 47
    • 66

    Partly Sunny

    • 54
    • 73

    Partly Sunny

Today 9 Nov Jefferson

Cloudy this Morning, then becoming mostly sunny. Scattered Flurries. Much cooler with Highs in the upper 30s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 9 Nov Jefferson

Mostly clear with a chance of Flurries in the Evening, then partly cloudy after midnight. Cooler with Lows in the lower 20s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Herculaneum Temperature Statistics

November Temperature

St. Louis Downtown Airport (23.6 miles)

  • Lowest 2 November, 2025

    30.9 °F

  • Average November

    53.9 °F

  • Highest 4 November, 2025

    73 °F

Climate (2020–Present)

St. Louis Downtown Airport (23.6 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.7 °F
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