Greystone Lake Weather Forecast

    • 31
    • 53

    Decreasing Clouds

    • 42
    • 53

    Chance Rain Showers

    • 21
    • 50

    Breezy

    • 39
    • 46

    Partly Sunny

    • 29
    • 55

    Partly Sunny

    • 32
    • 46

    Mostly Cloudy

    • 39
    • 51

    Partly Sunny

Today 16 Dec Johnson

Mostly sunny. Near steady temperature in the lower 50s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 16 Dec Johnson

Mostly Sunny, then becoming mostly cloudy this Evening, then becoming mostly clear. Lows around 30. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight.

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  • Temperature Real-Time

Greystone Lake Temperature Statistics

December Temperature

Olathe, Johnson County Executive Airport (1.2 miles)

  • Lowest 14 December, 2025

    8.1 °F

  • Average December

    30.7 °F

  • Highest 9 December, 2025

    55 °F

Climate (2020–Present)

Olathe, Johnson County Executive Airport (1.2 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    67.2 °F
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