Grain Valley Weather Forecast

    • 39
    • 50

    Becoming Sunny

    • 41
    • 59

    Partly Sunny

    • 36
    • 58

    Mostly Sunny

    • 41
    • 63

    Partly Sunny

    • 37
    • 55

    Slight Chance Rain

    • 29
    • 49

    Mostly Cloudy

    • 21
    • 44

    Partly Sunny

Today 4 Jan Jackson

Mostly sunny. Highs around 50. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 4 Jan Jackson

Mostly clear. Patchy fog after midnight. Not as cool with Lows in the upper 30s. South Winds 10 to 15 Mph with Gusts up to 25 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 2 January, 2026

    28 °F

  • Average January

    31.4 °F

  • Highest 1 January, 2026

    42.1 °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

    57.6 °F

  • Average High 2021–2026

    67.3 °F
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