Bismark Lake Weather Forecast

    • 35
    • 51

    Increasing Clouds

    • 42
    • 57

    Slight Chance Rain Showers

    • 44
    • 58

    Rain Showers Likely

    • 36
    • 56

    Chance Rain Showers

    • 35
    • 56

    Partly Sunny

    • 32
    • 52

    Mostly Sunny

Today 13 Oct Central Black Hills

Partly cloudy. Highs in the upper 40s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 13 Oct Central Black Hills

Mostly cloudy. A slight chance of rain Showers and snow Showers after midnight. Lows in the mid 30s. Southeast Winds 10 to 15 Mph with Gusts up to 40 Mph. Chance of precipitation 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Bismark Lake Temperature Statistics

October Temperature

Custer, Custer County Airport (5.6 miles)

  • Lowest 7 October, 2025

    30 °F

  • Average October

    53.3 °F

  • Highest 3 October, 2025

    81 °F

Climate (2020–Present)

Custer, Custer County Airport (5.6 miles)

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

  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    44.7 °F

  • Average High 2020–2025

    56.1 °F
Get WillyWeather+ to remove ads