Jerseyville Weather Forecast

    • 58
    • 81

    Partly Sunny

    • 61
    • 81

    Partly Sunny

    • 65
    • 83

    Partly Sunny

    • 66
    • 87

    Partly Sunny

    • 63
    • 86

    Partly Sunny

Today 23 Aug Jersey

Sunny. Highs in the lower 80s. Northwest Winds 5 to 10 Mph.

Tonight 23 Aug Jersey

Partly cloudy. Lows in the upper 50s. North Winds around 5 Mph, becoming east after midnight.

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Jerseyville Temperature Statistics

August Temperature

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

  • Lowest 18 August, 2026

    62.7 °F

  • Average August

    78.8 °F

  • Highest 13 August, 2026

    97.6 °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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