Harrison Weather Forecast

    • 35
    • 50

    Chance Rain

    • 34
    • 49

    Partly Sunny

    • 34
    • 56

    Partly Sunny

    • 40
    • 54

    Mostly Cloudy

    • 32
    • 52

    Chance Rain/Snow

    • 25
    • 42

    Slight Chance Snow

Today 12 Dec Missouri Headwaters

Mostly cloudy. A 50 percent chance of rain and snow in the morning. Highs in the upper 40s. East Winds 10 to 15 Mph shifting to the southwest 10 to 20 Mph in the afternoon. Gusts up to 35 Mph.

Tonight 12 Dec Missouri Headwaters

Mostly cloudy with a 50 percent chance of Rain, Drizzle, snow and light freezing drizzle. Highs in the upper 40s. Lows 34 to 40. Southwest Winds 10 to 20 Mph with Gusts to around 40 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Harrison Temperature Statistics

December Temperature

Ennis - Big Sky Airport (29.8 miles)

  • Lowest 1 December, 2025

    5 °F

  • Average December

    33.1 °F

  • Highest 9 December, 2025

    51.8 °F

Climate (2020–Present)

Ennis - Big Sky Airport (29.8 miles)

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

  • Average Low 2020–2025

    31.5 °F

  • Average 2020–2025

    43.9 °F

  • Average High 2020–2025

    55.7 °F
Get WillyWeather+ to remove ads