Round Rock Weather Forecast

    • 69
    • 78

    Chance Thunderstorms

    • 69
    • 85

    Chance Thunderstorms

    • 67
    • 89

    Rain Showers Likely

    • 62
    • 81

    Partly Sunny

    • 66
    • 84

    Partly Sunny

    • 68
    • 87

    Partly Sunny

Today 8 May Williamson

Mostly cloudy this Morning, then becoming partly cloudy. A slight chance of Showers and Thunderstorms. Highs in the upper 70s. East Winds around 5 Mph, becoming southeast around 5 Mph this afternoon. Chance of rain 20 percent.

Tonight 8 May Williamson

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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Round Rock Temperature Statistics

May Temperature

Austin Executive Airport (10.6 miles)

  • Lowest 1 May, 2026

    59 °F

  • Average May

    60.2 °F

  • Highest 1 May, 2026

    62.6 °F

Climate (2021–Present)

Austin Executive Airport (10.6 miles)

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  • Average Low 2021–2026

    59.8 °F

  • Average 2021–2026

    69.6 °F

  • Average High 2021–2026

    80.7 °F
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