Dewey Weather Forecast

    • 19
    • 45

    Rain/Snow

    • 22
    • 44

    Partly Sunny

    • 26
    • 63

    Chance Rain/Snow

    • 27
    • 59

    Slight Chance Rain/Snow

    • 14
    • 52

    Rain/Snow

    • 10
    • 32

    Slight Chance Snow

    • 23
    • 41

    Mostly Cloudy

Today 10 Mar Southern Black Hills

Snow and rain likely. Highs in the lower 40s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of precipitation 70 percent.

Tonight 10 Mar Southern Black Hills

Mostly cloudy. Snow in the Evening, then a chance of snow after midnight. Snow accumulation around an inch. Lows in the lower 20s. Northwest Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening. Chance of snow 90 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Dewey Temperature Statistics

March Temperature

Custer, Custer County Airport (24.9 miles)

  • Lowest 6 March, 2026

    19.9 °F

  • Average March

    40.7 °F

  • Highest 8 March, 2026

    62.1 °F

Climate (2021–Present)

Custer, Custer County Airport (24.9 miles)

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

  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.2 °F

  • Average High 2021–2026

    56.7 °F
Get WillyWeather+ to remove ads