Marble Falls Weather Forecast

    • 66
    • 89

    Chance Rain Showers

    • 61
    • 84

    Slight Chance Rain Showers

    • 58
    • 82

    Mostly Sunny

    • 59
    • 83

    Partly Sunny

    • 62
    • 83

    Mostly Cloudy

    • 63
    • 84

    Slight Chance Thunderstorms

Today 21 Sep Newton County Lower Elevations

Mostly sunny. A slight chance of Showers and Thunderstorms Early, then a chance of Showers and Thunderstorms. Highs in the upper 80s. North Winds around 5 Mph. Chance of rain 30 percent. Average rainfall less than 1/10 inch.

Tonight 21 Sep Newton County Lower Elevations

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the mid 60s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marble Falls Temperature Statistics

September Temperature

Harrison, Boone County Airport (11.2 miles)

  • Lowest 12 September, 2026

    69.7 °F

  • Average September

    85.4 °F

  • Highest 6 September, 2026

    103.6 °F

Climate (2021–2026)

Harrison, Boone County Airport (11.2 miles)

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  • Average Low 2021–2026

    50.3 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    71.8 °F
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