Grain Valley Weather Forecast

    • 32
    • 40

    Decreasing Clouds

    • 16
    • 38

    Snow Showers

    • 7
    • 23

    Partly Sunny

    • 13
    • 39

    Partly Sunny

    • 11
    • 26

    Mostly Sunny

    • 25
    • 41

    Mostly Sunny

    • 22
    • 44

    Partly Sunny

Today 15 Jan Jackson

Partly sunny. Highs in the lower 40s. South Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 15 Jan Jackson

Mostly Cloudy, then becoming partly cloudy this Evening, then becoming mostly cloudy. Not as cool with Lows in the lower 30s. South Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest 10 to 15 Mph with Gusts up to 25 Mph after midnight.

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Grain Valley Temperature Statistics

January Temperature

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

  • Lowest 11 January, 2026

    19 °F

  • Average January

    40.9 °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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