Katy Lake Weather Forecast

    • 70
    • 91

    Slight Chance Thunderstorms

    • 69
    • 90

    Chance Rain Showers

    • 71
    • 91

    Partly Sunny

    • 72
    • 91

    Mostly Sunny

    • 69
    • 90

    Chance Thunderstorms

    • 66
    • 85

    Chance Rain Showers

Today 18 Sep Hill

Sunny. A 20 percent chance of Showers in the afternoon. Highs in the lower 90s. Southwest Winds around 5 Mph.

Tonight 18 Sep Hill

Mostly clear. Lows around 70. Light and variable Winds, becoming south around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Katy Lake Temperature Statistics

September Temperature

Hillsboro, Hillsboro Municipal Airport (3.7 miles)

  • Lowest 10 September, 2025

    60.4 °F

  • Average September

    78.6 °F

  • Highest 4 September, 2025

    99 °F

Climate (2020–Present)

Hillsboro, Hillsboro Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    57 °F

  • Average 2020–2025

    67.6 °F

  • Average High 2020–2025

    78.8 °F
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