Katy Lake Weather Forecast

    • 73
    • 93

    Slight Chance Thunderstorms

    • 73
    • 94

    Partly Sunny

    • 69
    • 93

    Partly Sunny

    • 69
    • 92

    Partly Sunny

    • 72
    • 92

    Partly Sunny

    • 72
    • 92

    Slight Chance Thunderstorms

    • 71
    • 92

    Slight Chance Thunderstorms

Today 22 Sep Hill

Mostly sunny with a 20 percent chance of Showers and Thunderstorms. Highs in the mid 90s. Northeast Winds 5 to 10 Mph.

Tonight 22 Sep Hill

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 70s. Northeast Winds around 5 Mph.

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Katy Lake Temperature Statistics

September Temperature

Hillsboro, Hillsboro Municipal Airport (3.7 miles)

  • Lowest 11 September, 2026

    73.2 °F

  • Average September

    87.1 °F

  • Highest 15 September, 2026

    101.7 °F

Climate (2021–2026)

Hillsboro, Hillsboro Municipal Airport (3.7 miles)

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  • Average Low 2021–2026

    58 °F

  • Average 2021–2026

    68.8 °F

  • Average High 2021–2026

    80.1 °F
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