Mammoth Weather Forecast

    • 55
    • 71

    Chance Rain Showers

    • 49
    • 61

    Rain Showers

    • 46
    • 62

    Mostly Sunny

    • 46
    • 65

    Sunny

    • 49
    • 68

    Sunny

    • 51
    • 71

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

Today 27 Sep Western Millard and Juab Counties

Partly sunny. Breezy. Highs in the lower 80s. Southwest Winds 15 to 25 Mph.

Tonight 27 Sep Western Millard and Juab Counties

Breezy. Mostly cloudy in the Evening, then partly cloudy with a 20 percent chance of rain Showers after midnight. Lows around 50. South Winds 15 to 25 Mph.

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Mammoth Temperature Statistics

September Temperature

Provo, Provo Municipal Airport (28.6 miles)

  • Lowest 20 September, 2026

    48 °F

  • Average September

    68.7 °F

  • Highest 12 September, 2026

    91.9 °F

Climate (2021–2026)

Provo, Provo Municipal Airport (28.6 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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