Shelf Lake Weather Forecast

    • 49
    • 63

    Increasing Clouds

    • 47
    • 63

    Mostly Cloudy

    • 46
    • 63

    Mostly Sunny

    • 38
    • 54

    Chance Rain Showers

    • 42
    • 58

    Mostly Sunny

    • 45
    • 64

    Mostly Sunny

Today 18 Sep Bitterroot/Sapphire Mountains

Mostly sunny. Highs in the 70s.

Tonight 18 Sep Bitterroot/Sapphire Mountains

Mostly clear. Lows in the 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Shelf Lake Temperature Statistics

September Temperature

Salmon, Lemhi County Airport (45.4 miles)

  • Lowest 12 September, 2025

    39.9 °F

  • Average September

    60.2 °F

  • Highest 3 September, 2025

    90 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (45.4 miles)

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

  • Average Low 2020–2025

    32.3 °F

  • Average 2020–2025

    45.3 °F

  • Average High 2020–2025

    58.3 °F
Get WillyWeather+ to remove ads