Grain Valley Weather Forecast

    • 65
    • 86

    Mostly Sunny

    • 68
    • 87

    Mostly Sunny

    • 73
    • 92

    Mostly Sunny

    • 74
    • 94

    Mostly Sunny

    • 72
    • 93

    Partly Sunny

    • 71
    • 90

    Slight Chance Thunderstorms

Today 13 Aug Jackson

Mostly sunny. Highs in the mid 80s. Light and variable Winds, becoming northeast around 5 Mph.

Tonight 13 Aug Jackson

Mostly clear. Lows in the mid 60s. East Winds around 5 Mph.

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Grain Valley Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2025

    62.1 °F

  • Average August

    76.4 °F

  • Highest 8 August, 2025

    95 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    48 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    67.1 °F
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