Jerseyville Weather Forecast

    • 71
    • 95

    Mostly Cloudy

    • 63
    • 89

    Rain Showers Likely

    • 56
    • 75

    Rain Showers Likely

    • 51
    • 69

    Partly Sunny

    • 53
    • 72

    Partly Sunny

    • 55
    • 74

    Partly Sunny

Today 19 Sep Jersey

Partly sunny this Morning, then becoming mostly cloudy. Hot with Highs in the mid 90s. Southwest Winds 5 to 10 Mph.

Tonight 19 Sep Jersey

Mostly cloudy in the Evening, then becoming partly cloudy. Lows around 70. Southwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jerseyville Temperature Statistics

September Temperature

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

  • Lowest 14 September, 2026

    60.7 °F

  • Average September

    81.2 °F

  • Highest 2 September, 2026

    101.6 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    69 °F
Get WillyWeather+ to remove ads