Lenexa Weather Forecast

    • 66
    • 89

    Chance Thunderstorms

    • 64
    • 83

    Rain Showers Likely

    • 63
    • 79

    Chance Thunderstorms

    • 65
    • 81

    Chance Thunderstorms

    • 65
    • 82

    Chance Thunderstorms

    • 61
    • 82

    Chance Rain Showers

Today 17 Sep Johnson

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. South Winds around 5 Mph, becoming northeast around 5 Mph this afternoon. Chance of rain 50 percent.

Tonight 17 Sep Johnson

Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the mid 60s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Lenexa Temperature Statistics

September Temperature

Olathe, Johnson County Executive Airport (6.8 miles)

  • Lowest 6 September, 2025

    48.9 °F

  • Average September

    69.6 °F

  • Highest 12 September, 2025

    93 °F

Climate (2020–Present)

Olathe, Johnson County Executive Airport (6.8 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.2 °F

  • Average High 2020–2025

    67.1 °F
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