Grain Valley Weather Forecast

    • 30
    • 40

    Sunny

    • 36
    • 55

    Mostly Sunny

    • 36
    • 60

    Mostly Cloudy

    • 18
    • 43

    Mostly Sunny

    • 29
    • 39

    Mostly Cloudy

    • 18
    • 44

    Mostly Cloudy

    • 14
    • 32

    Partly Sunny

Today 11 Jan Jackson

Sunny. Highs around 40. Northwest Winds 5 to 10 Mph, becoming southwest this afternoon.

Tonight 11 Jan Jackson

Clear. Lows around 30. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grain Valley Temperature Statistics

January Temperature

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

  • Lowest 3 January, 2026

    26.1 °F

  • Average January

    41.8 °F

  • Highest 7 January, 2026

    66 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    67.4 °F
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