Sun Valley Weather Forecast

    • 64
    • 94

    Chance Thunderstorms

    • 65
    • 94

    Slight Chance Thunderstorms

    • 66
    • 95

    Mostly Sunny

    • 68
    • 96

    Slight Chance Thunderstorms

    • 68
    • 98

    Hot

    • 68
    • 98

    Hot

Today 23 Aug Little Colorado River Valley in Navajo County

Partly cloudy in the morning. Mostly cloudy with a 30 percent chance of Thunderstorms in the afternoon. Highs around 93. Light Winds becoming west around 15 Mph in the afternoon.

Tonight 23 Aug Little Colorado River Valley in Navajo County

Partly cloudy. Lows around 65. Light Winds.

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Sun Valley Temperature Statistics

August Temperature

Winslow, Winslow Municipal Airport (37.3 miles)

  • Lowest 15 August, 2026

    55.7 °F

  • Average August

    82 °F

  • Highest 2 August, 2026

    104.6 °F

Climate (2021–2026)

Winslow, Winslow Municipal Airport (37.3 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    74.8 °F
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