Olathe Weather Forecast

    • 53
    • 75

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

    • 61
    • 80

    Chance Rain Showers

    • 61
    • 84

    Mostly Sunny

    • 64
    • 89

    Mostly Sunny

    • 66
    • 90

    Partly Sunny

Today 6 Sep Johnson

Sunny. Highs in the mid 70s. West Winds 5 to 10 Mph.

Tonight 6 Sep Johnson

Mostly clear. Lows in the lower 50s. Northwest Winds around 5 Mph, becoming northeast after midnight.

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Olathe Temperature Statistics

September Temperature

Olathe, Johnson County Executive Airport (4.3 miles)

  • Lowest 4 September, 2025

    54 °F

  • Average September

    68.7 °F

  • Highest 3 September, 2025

    86 °F

Climate (2020–Present)

Olathe, Johnson County Executive Airport (4.3 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    67.1 °F
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