Jerseyville Weather Forecast

    • 48
    • 79

    Mostly Sunny

    • 46
    • 75

    Sunny

    • 54
    • 79

    Sunny

    • 55
    • 83

    Sunny

    • 55
    • 83

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

    • 58
    • 84

    Partly Sunny

Today 4 Oct Jersey

Sunny. Near steady temperature in the upper 70s. North Winds 5 to 10 Mph.

Tonight 4 Oct Jersey

Clear. Lows in the upper 40s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jerseyville Temperature Statistics

October Temperature

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

  • Lowest 2 October, 2026

    60.1 °F

  • Average October

    71.6 °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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