Grain Valley Weather Forecast

    • 50
    • 75

    Becoming Sunny

    • 51
    • 77

    Sunny

    • 55
    • 78

    Partly Sunny

    • 54
    • 78

    Mostly Cloudy

    • 53
    • 77

    Mostly Cloudy

    • 47
    • 71

    Mostly Cloudy

Today 21 Oct Jackson

Sunny. Near steady temperature in the mid 70s. South Winds around 5 Mph.

Tonight 21 Oct Jackson

Mostly clear. Lows in the lower 50s. South Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grain Valley Temperature Statistics

October Temperature

Lee's Summit, Lee's Summit Municipal Airport (9.9 miles)

  • Lowest 17 October, 2026

    36.6 °F

  • Average October

    66.1 °F

  • Highest 13 October, 2026

    90.6 °F

Climate (2021–2026)

Lee's Summit, Lee's Summit Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    48.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    68.1 °F
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