Jerseyville Weather Forecast

    • 66
    • 85

    Slight Chance Thunderstorms

    • 65
    • 84

    Partly Sunny

    • 66
    • 86

    Mostly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

    • 70
    • 92

    Rain Showers Likely

    • 68
    • 88

    Chance Thunderstorms

Today 5 Jul Jersey

Mostly sunny. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 80s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 5 Jul Jersey

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jerseyville Temperature Statistics

July Temperature

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

  • Lowest 1 July, 2026

    73.7 °F

  • Average July

    84.6 °F

  • Highest 2 July, 2026

    96.1 °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 °F

  • Average High 2021–2026

    68.9 °F
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