Mount Jefferson Weather Forecast

    • 49
    • 69

    Partly Sunny

    • 48
    • 68

    Mostly Sunny

    • 46
    • 68

    Mostly Sunny

    • 49
    • 68

    Partly Sunny

    • 50
    • 66

    Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

Today 20 Aug Centennial Mountains/Island Park

Mostly sunny with a slight chance of rain Showers. Highs 82 to 90.

Tonight 20 Aug Centennial Mountains/Island Park

Mostly clear. A slight chance of rain Showers in the evening. Lows 49 to 59.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Jefferson Temperature Statistics

August Temperature

West Yellowstone (20.5 miles)

  • Lowest 10 August, 2025

    32 °F

  • Average August

    60.8 °F

  • Highest 6 August, 2025

    84.2 °F

Climate (2020–Present)

West Yellowstone (20.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    66.1 °F
Get WillyWeather+ to remove ads