Middleton Weather Forecast

    • 71
    • 96

    Chance Rain Showers

    • 68
    • 87

    Rain Showers Likely

    • 68
    • 91

    Mostly Sunny

    • 68
    • 92

    Mostly Sunny

    • 69
    • 94

    Mostly Sunny

    • 71
    • 94

    Slight Chance Thunderstorms

    • 71
    • 93

    Chance Thunderstorms

Today 30 Aug Lower Washington County

Sunny in the morning then becoming partly cloudy. Highs in the upper 90s.

Tonight 30 Aug Lower Washington County

Partly cloudy with a 20 percent chance of Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall. Lows around 70.

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Middleton Temperature Statistics

August Temperature

St George Municipal Airport (5.6 miles)

  • Lowest 15 August, 2026

    63 °F

  • Average August

    89.8 °F

  • Highest 1 August, 2026

    109.9 °F

Climate (2021–2026)

St George Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    53 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.9 °F
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