South Side Weather Forecast

    • 9
    • 14

    Slight Chance Snow

    • 12
    • 21

    Gradual Clearing

    • 31
    • 48

    Mostly Cloudy

    • 39
    • 49

    Mostly Cloudy

    • 37
    • 53

    Chance Rain

    • 25
    • 48

    Chance Rain/Snow

    • 29
    • 44

    Slight Chance Rain/Snow

Today 12 Dec Southwestern Yellowstone

Mostly cloudy. Cold. Patchy fog early in the afternoon. Highs around 13. East Winds 5 to 10 Mph.

Tonight 12 Dec Southwestern Yellowstone

Mostly cloudy. Patchy fog early in the evening. A 20 percent chance of snow after 3 am. Lows around 9. Northeast Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Side Temperature Statistics

December Temperature

Billings, Billings Logan International Airport (2.5 miles)

  • Lowest 1 December, 2025

    16 °F

  • Average December

    34.4 °F

  • Highest 9 December, 2025

    57 °F

Climate (2020–Present)

Billings, Billings Logan International Airport (2.5 miles)

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

  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    49.5 °F

  • Average High 2020–2025

    60.6 °F
Get WillyWeather+ to remove ads