Grain Valley Weather Forecast

    • 26
    • 50

    Increasing Clouds

    • 28
    • 40

    Mostly Cloudy

    • 23
    • 42

    Mostly Cloudy

    • 27
    • 42

    Mostly Sunny

    • 36
    • 53

    Partly Sunny

    • 36
    • 59

    Partly Sunny

Today 31 Dec Jackson

Sunny. Highs in the lower 50s. Southwest Winds 5 to 10 Mph.

Tonight 31 Dec Jackson

Clear in the Evening, then becoming partly cloudy. Lows in the mid 20s. Northwest Winds around 5 Mph, becoming northeast after midnight.

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  • Temperature Real-Time

Grain Valley Temperature Statistics

December Temperature

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

  • Lowest 14 December, 2025

    6.1 °F

  • Average December

    36.4 °F

  • Highest 24 December, 2025

    69.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.6 °F

  • Average High 2020–2025

    67.3 °F
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