Alter-leawood Weather Forecast

    • 74
    • 100

    Hot

    • 73
    • 98

    Slight Chance Thunderstorms

    • 74
    • 96

    Mostly Sunny

    • 77
    • 99

    Hot

    • 70
    • 96

    Rain Showers Likely

    • 70
    • 90

    Chance Thunderstorms

Today 5 Sep Johnson

Partly cloudy. Hot with Highs in the upper 90s. South Winds around 5 Mph. Heat index Values up to 106.

Tonight 5 Sep Johnson

Mostly clear. Lows in the mid 70s. East Winds around 5 Mph. Heat index Values up to 104 early in the evening.

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Alter-leawood Temperature Statistics

September Temperature

Olathe, Johnson County Executive Airport (7.5 miles)

  • Lowest 1 September, 2026

    71.7 °F

  • Average September

    85.9 °F

  • Highest 2 September, 2026

    99.6 °F

Climate (2021–2026)

Olathe, Johnson County Executive Airport (7.5 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.1 °F
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