Lake Girardeau Weather Forecast

    • 73
    • 97

    Hot

    • 72
    • 96

    Chance Thunderstorms

    • 67
    • 90

    Chance Thunderstorms

    • 66
    • 88

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

Today 18 Aug Cape Girardeau

Sunny, hot with Highs in the upper 90s. Calm Winds, becoming southeast around 5 Mph in the afternoon. Highest heat index Readings heat index Readings up to 106 in the afternoon.

Tonight 18 Aug Cape Girardeau

Mostly clear. Lows in the mid 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Girardeau Temperature Statistics

August Temperature

Cape Girardeau, Cape Girardeau Regional Airport (14.9 miles)

  • Lowest 3 August, 2025

    56.6 °F

  • Average August

    78.7 °F

  • Highest 14 August, 2025

    94.6 °F

Climate (2020–Present)

Cape Girardeau, Cape Girardeau Regional Airport (14.9 miles)

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  • Average Low 2020–2025

    48.7 °F

  • Average 2020–2025

    59.1 °F

  • Average High 2020–2025

    69.8 °F
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