Jerseyville Weather Forecast

    • 37
    • 55

    Becoming Sunny

    • 37
    • 64

    Mostly Sunny

    • 49
    • 65

    Mostly Sunny

    • 56
    • 77

    Slight Chance Thunderstorms

    • 59
    • 79

    Mostly Sunny

    • 61
    • 83

    Rain Showers Likely

    • 46
    • 73

    Chance Thunderstorms

Today 18 Apr Jersey

Sunny and much cooler. Near steady temperature in the lower 50s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 18 Apr Jersey

Clear. Lows in the mid 30s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming west around 5 Mph after midnight.

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  • Temperature Real-Time

Jerseyville Temperature Statistics

April Temperature

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

  • Lowest 6 April, 2026

    38.6 °F

  • Average April

    62.9 °F

  • Highest 14 April, 2026

    91.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    68.8 °F
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