Downtown Missoula Weather Forecast

    • 50
    • 82

    Rain Showers

    • 46
    • 72

    Mostly Cloudy

    • 44
    • 70

    Rain Showers

    • 39
    • 58

    Rain Showers

    • 37
    • 63

    Mostly Sunny

    • 42
    • 68

    Partly Sunny

Today 10 Sep Missoula/Bitterroot Valleys

Mostly sunny. Highs near 80. West Winds to 15 Mph with Gusts to around 30 Mph in the afternoon.

Tonight 10 Sep Missoula/Bitterroot Valleys

A chance of rain in the Evening, then rain Showers likely and a slight chance of Thunderstorms after midnight. Chance of precipitation 70 percent. Lows in the mid 40s to lower 50s. South Winds to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Downtown Missoula Temperature Statistics

September Temperature

Missoula, Missoula International Airport (5.6 miles)

  • Lowest 8 September, 2026

    42.1 °F

  • Average September

    58.9 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (5.6 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

    59.7 °F
Get WillyWeather+ to remove ads