Jerseyville Weather Forecast

    • 53
    • 79

    Rain Showers Likely

    • 43
    • 66

    Becoming Sunny

    • 48
    • 72

    Mostly Sunny

    • 55
    • 79

    Chance Rain Showers

    • 47
    • 73

    Sunny

    • 55
    • 73

    Slight Chance Thunderstorms

    • 61
    • 83

    Slight Chance Thunderstorms

Today 9 May Jersey

Sunny. Not as cool with Highs in the upper 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 9 May Jersey

Partly cloudy this Evening, then becoming mostly cloudy. A slight chance of Thunderstorms. A chance of Showers this Evening, then Showers likely after midnight. Lows in the lower 50s. West Winds around 5 Mph, becoming north after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jerseyville Temperature Statistics

May Temperature

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

  • Lowest 3 May, 2026

    40.6 °F

  • Average May

    57.8 °F

  • Highest 4 May, 2026

    81.6 °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

    58 °F

  • Average High 2021–2026

    68.9 °F
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