Flathead Lake State Park - Yellow Bay Unit Weather Forecast

    • 42
    • 52

    Rain Showers Likely

    • 41
    • 58

    Chance Rain

    • 44
    • 63

    Mostly Sunny

    • 48
    • 66

    Mostly Cloudy

    • 47
    • 64

    Chance Rain

    • 46
    • 66

    Partly Sunny

Today 28 Apr Flathead/Mission Valleys

Areas of rain in the Morning, then rain Showers likely and a slight chance of Thunderstorms in the afternoon. Chance of precipitation 70 percent. Highs in the 50s.

Tonight 28 Apr Flathead/Mission Valleys

Mostly cloudy with a 30 percent chance of rain. Lows in the 30s to lower 40s.

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Flathead Lake State Park - Yellow Bay Unit Temperature Statistics

April Temperature

Kalispell, Glacier Park International Airport (31.1 miles)

  • Lowest 8 April, 2026

    20.6 °F

  • Average April

    43.3 °F

  • Highest 6 April, 2026

    67.6 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (31.1 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    57.2 °F
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