Jerseyville Weather Forecast

    • 63
    • 87

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 69
    • 91

    Chance Rain Showers

    • 62
    • 82

    Rain Showers Likely

    • 52
    • 76

    Chance Rain Showers

    • 37
    • 65

    Partly Sunny

Today 11 Oct Jersey

Clear. Lows in the mid 30s. Highs in the upper 60s.

Tonight 11 Oct Jersey

Mostly clear this Evening, then becoming partly cloudy. Not as cool with Lows in the lower 60s. South 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 4 October, 2026

    44.7 °F

  • Average October

    66.7 °F

  • Highest 1 October, 2026

    91.7 °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 °F
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