Grain Valley Weather Forecast

    • 10
    • 24

    Cloudy

    • 0
    • 19

    Partly Sunny

    • 5
    • 18

    Partly Sunny

    • 18
    • 31

    Mostly Cloudy

    • 24
    • 39

    Mostly Cloudy

    • 26
    • 42

    Mostly Cloudy

Today 29 Jan Jackson

Mostly cloudy. A chance of Flurries in the afternoon. Cooler with Highs in the mid 20s. Northeast Winds 5 to 10 Mph.

Tonight 29 Jan Jackson

Mostly cloudy. Cold with Lows around 16. East Winds 5 to 10 Mph.

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Grain Valley Temperature Statistics

January Temperature

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

  • Lowest 26 January, 2026

    -5.1 °F

  • Average January

    31.8 °F

  • Highest 7 January, 2026

    67.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    48.1 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    67.3 °F
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