Lake Saint Louis Weather Forecast

    • 48
    • 67

    Rain Showers Likely

    • 42
    • 66

    Becoming Sunny

    • 45
    • 67

    Partly Sunny

    • 39
    • 61

    Partly Sunny

    • 43
    • 62

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

    • 50
    • 73

    Chance Rain Showers

Today 28 Apr St. Charles

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Cooler. Near steady temperature in the mid 60s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 28 Apr St. Charles

Showers with a chance of Thunderstorms. Lows in the lower 50s. North Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Saint Louis Temperature Statistics

April Temperature

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

  • Lowest 6 April, 2026

    35.7 °F

  • Average April

    63.8 °F

  • Highest 14 April, 2026

    89.7 °F

Climate (2021–Present)

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.8 °F
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