Heritage Lake Weather Forecast

    • 75
    • 96

    Mostly Sunny

    • 74
    • 97

    Hot

    • 73
    • 96

    Partly Sunny

    • 75
    • 95

    Mostly Sunny

    • 77
    • 98

    Hot

    • 75
    • 97

    Slight Chance Thunderstorms

Today 4 Sep Johnson

Sunny, hot with Highs in the upper 90s. South Winds 5 to 10 Mph. Heat index Values up to 105.

Tonight 4 Sep Johnson

Mostly clear. Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 103 early in the evening.

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Heritage Lake Temperature Statistics

September Temperature

Olathe, Johnson County Executive Airport (0.6 miles)

  • Lowest 1 September, 2026

    71.7 °F

  • Average September

    85.5 °F

  • Highest 1 September, 2026

    98.7 °F

Climate (2021–2026)

Olathe, Johnson County Executive Airport (0.6 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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