Bigfork Weather Forecast

    • 46
    • 59

    Rain

    • 47
    • 56

    Rain

    • 46
    • 60

    Mostly Cloudy

    • 46
    • 63

    Mostly Sunny

    • 47
    • 67

    Mostly Sunny

    • 50
    • 69

    Mostly Sunny

Today 13 Sep Flathead/Mission Valleys

Rain likely in the Morning, then rain Showers likely and a slight chance of Thunderstorms in the afternoon. Chance of precipitation 90 percent. Highs in the mid 50s to lower 60s. Southwest Winds to 15 Mph.

Tonight 13 Sep Flathead/Mission Valleys

A chance of rain in the Evening, then rain likely after midnight. Chance of rain 90 percent. Lows in the upper 30s to mid 40s.

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Bigfork Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (18.6 miles)

  • Lowest 1 September, 2026

    41.6 °F

  • Average September

    57.7 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (18.6 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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