Jerseyville Weather Forecast

    • 45
    • 74

    Mostly Sunny

    • 48
    • 78

    Sunny

    • 45
    • 72

    Sunny

    • 49
    • 75

    Sunny

    • 52
    • 81

    Sunny

    • 54
    • 82

    Sunny

Today 3 Oct Jersey

Sunny. Highs in the mid 70s. East Winds around 5 Mph.

Tonight 3 Oct Jersey

Partly cloudy in the Evening, then clearing. Lows in the mid 40s. East Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Jerseyville Temperature Statistics

October Temperature

St. Charles, St. Charles County Smartt Airport (13.7 miles)

  • Lowest 1 October, 2026

    66.9 °F

  • Average October

    77.6 °F

  • Highest 1 October, 2026

    91 °F

Climate (2021–2026)

St. Charles, St. Charles County Smartt Airport (13.7 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    69 °F
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