Mill Hollow Reservoir Weather Forecast

    • 40
    • 55

    Rain Showers

    • 43
    • 59

    Partly Sunny

    • 44
    • 59

    Isolated Thunderstorms

    • 44
    • 59

    Slight Chance Thunderstorms

    • 46
    • 60

    Partly Sunny

    • 42
    • 59

    Slight Chance Thunderstorms

Today 22 Sep Western Uinta Mountains

Mostly cloudy. Scattered rain Showers and isolated Thunderstorms in the Morning, then numerous rain Showers and scattered Thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 70 percent.

Tonight 22 Sep Western Uinta Mountains

Scattered rain Showers and isolated Thunderstorms in the evening. Partly cloudy. Lows in the upper 30s. Chance of precipitation 30 percent.

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Mill Hollow Reservoir Temperature Statistics

September Temperature

Provo, Provo Municipal Airport (37.3 miles)

  • Lowest 20 September, 2026

    48 °F

  • Average September

    70 °F

  • Highest 12 September, 2026

    91.9 °F

Climate (2021–2026)

Provo, Provo Municipal Airport (37.3 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    53.3 °F

  • Average High 2021–2026

    64.4 °F
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