Darby Weather Forecast

    • 42
    • 66

    Becoming Sunny

    • 47
    • 77

    Mostly Sunny

    • 49
    • 81

    Chance Rain Showers

    • 44
    • 68

    Partly Sunny

    • 43
    • 65

    Rain Likely

    • 39
    • 56

    Chance Rain

    • 42
    • 66

    Mostly Sunny

Today 8 Sep Missoula/Bitterroot Valleys

Mostly cloudy. A 20 percent chance of rain until late afternoon. Areas of fog early in the morning. Patchy fog late in the morning. Highs in the lower to mid 60s.

Tonight 8 Sep Missoula/Bitterroot Valleys

Mostly clear. Patchy fog late in the night. Lows in the mid 30s to lower 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Darby Temperature Statistics

September Temperature

Missoula, Missoula International Airport (62.1 miles)

  • Lowest 1 September, 2026

    45.6 °F

  • Average September

    60.1 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (62.1 miles)

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

  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    59.8 °F
Get WillyWeather+ to remove ads