Marion Bay Weather Forecast

    • 60
    • 74

    Chance Thunderstorms

    • 58
    • 72

    Chance Thunderstorms

    • 60
    • 78

    Chance Rain Showers

    • 63
    • 75

    Rain Showers Likely

    • 62
    • 82

    Chance Thunderstorms

    • 62
    • 82

    Chance Thunderstorms

    • 59
    • 79

    Chance Rain Showers

Today 3 Aug North St. Louis

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Areas of smoke. Near steady temperature in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 30 percent.

Tonight 3 Aug North St. Louis

Mostly cloudy with a chance of Showers and Thunderstorms. Areas of smoke. Lows in the upper 50s. South Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marion Bay Temperature Statistics

August Temperature

Falls International Airport (20.5 miles)

  • Lowest 1 August, 2025

    45 °F

  • Average August

    60.9 °F

  • Highest 1 August, 2025

    75.9 °F

Climate (2020–Present)

Falls International Airport (20.5 miles)

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  • Average Low 2020–2025

    29.7 °F

  • Average 2020–2025

    40.9 °F

  • Average High 2020–2025

    51.1 °F
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