Jerseyville Weather Forecast

    • 36
    • 59

    Sunny

    • 37
    • 68

    Sunny

    • 40
    • 72

    Mostly Sunny

    • 43
    • 74

    Mostly Sunny

    • 46
    • 77

    Mostly Sunny

    • 50
    • 82

    Mostly Sunny

Today 17 Oct Jersey

Sunny. Near steady temperature in the upper 50s. Northeast Winds around 5 Mph.

Tonight 17 Oct Jersey

Clear. Lows in the mid 30s. Light and variable Winds, becoming southeast around 5 Mph after midnight.

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Jerseyville Temperature Statistics

October Temperature

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

  • Lowest 4 October, 2026

    44.7 °F

  • Average October

    69.1 °F

  • Highest 12 October, 2026

    93.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    69.1 °F
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