Jerseyville Weather Forecast

    • 39
    • 56

    Mostly Sunny

    • 35
    • 58

    Partly Sunny

    • 40
    • 49

    Mostly Cloudy

    • 53
    • 72

    Slight Chance Thunderstorms

    • 53
    • 74

    Chance Rain Showers

    • 54
    • 74

    Chance Rain Showers

Today 5 Apr Jersey

Sunny. Highs in the mid 50s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 5 Apr Jersey

Clear. Lows in the upper 30s. West Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jerseyville Temperature Statistics

April Temperature

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

  • Lowest 1 April, 2026

    48.7 °F

  • Average April

    65 °F

  • Highest 3 April, 2026

    82 °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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