Greystone Lake Weather Forecast

    • 72
    • 92

    Slight Chance Thunderstorms

    • 68
    • 88

    Rain Showers

    • 68
    • 86

    Chance Rain Showers

    • 71
    • 88

    Mostly Sunny

    • 74
    • 91

    Mostly Sunny

    • 75
    • 92

    Mostly Sunny

Today 4 Aug Johnson

Mostly sunny. Highs in the lower 90s. South Winds around 5 Mph.

Tonight 4 Aug Johnson

Partly cloudy. Lows in the lower 70s. East Winds around 5 Mph.

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  • Temperature Real-Time

Greystone Lake Temperature Statistics

August Temperature

Olathe, Johnson County Executive Airport (1.2 miles)

  • Lowest 1 August, 2026

    66.7 °F

  • Average August

    76 °F

  • Highest 2 August, 2026

    86 °F

Climate (2021–2026)

Olathe, Johnson County Executive Airport (1.2 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    68 °F
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