Sepulcher Mountain Weather Forecast

    • 48
    • 69

    Mostly Sunny

    • 46
    • 68

    Rain Showers

    • 39
    • 53

    Chance Rain Showers

    • 40
    • 58

    Mostly Sunny

    • 45
    • 65

    Partly Sunny

    • 46
    • 65

    Slight Chance Thunderstorms

    • 46
    • 63

    Chance Rain Showers

Today 5 Sep Yellowstone National Park

Mostly sunny. Near steady temperature around 70. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 5 Sep Yellowstone National Park

Mostly clear. Lows in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming southeast after midnight.

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Sepulcher Mountain Temperature Statistics

September Temperature

West Yellowstone (26.7 miles)

  • Lowest 2 September, 2026

    41 °F

  • Average September

    53.8 °F

  • Highest 2 September, 2026

    68 °F

Climate (2021–2026)

West Yellowstone (26.7 miles)

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  • Average Low 2021–2026

    33.8 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    66 °F
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