Herculaneum Weather Forecast

    • 29
    • 68

    Increasing Clouds

    • 29
    • 51

    Partly Sunny

    • 32
    • 49

    Mostly Cloudy

    • 35
    • 50

    Rain Likely

    • 36
    • 49

    Rain

    • 34
    • 52

    Slight Chance Rain

Today 10 Feb Jefferson

Mostly sunny. Highs in the upper 60s. Temperature falling into the lower 60s in the afternoon. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north in the afternoon.

Tonight 10 Feb Jefferson

Clear. Not as cool with Lows in the mid 40s. Temperature rising to around 50. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Herculaneum Temperature Statistics

February Temperature

St. Louis Downtown Airport (23.6 miles)

  • Lowest 1 February, 2026

    -1.4 °F

  • Average February

    28.6 °F

  • Highest 6 February, 2026

    48.9 °F

Climate (2021–Present)

St. Louis Downtown Airport (23.6 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.7 °F
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