Olathe Weather Forecast

    • 19
    • 24

    Sunny

    • 29
    • 45

    Mostly Sunny

    • 33
    • 52

    Mostly Sunny

    • 41
    • 56

    Mostly Cloudy

    • 26
    • 51

    Partly Sunny

    • 39
    • 48

    Partly Sunny

Today 14 Dec Johnson

Sunny. Highs in the lower 20s. North Winds 5 to 10 Mph, becoming southeast in the afternoon. Wind chill Values as low as 4 below in the morning.

Tonight 14 Dec Johnson

Mostly clear and much Colder. Near steady temperature around 7 above. North Winds 5 to 10 Mph. Wind chill Values as low as 8 below.

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Olathe Temperature Statistics

December Temperature

Olathe, Johnson County Executive Airport (4.3 miles)

  • Lowest 4 December, 2025

    14 °F

  • Average December

    32.8 °F

  • Highest 9 December, 2025

    55 °F

Climate (2020–Present)

Olathe, Johnson County Executive Airport (4.3 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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