Flathead Lake - Wild Horse Island State Park Weather Forecast

    • 53
    • 76

    Partly Sunny

    • 53
    • 81

    Mostly Cloudy

    • 50
    • 72

    Rain Likely

    • 45
    • 62

    Rain Likely

    • 44
    • 59

    Rain Likely

    • 45
    • 58

    Chance Rain

Today 9 May Flathead/Mission Valleys

Partly cloudy. Highs in the mid 70s to lower 80s. Southeast Winds to 15 Mph.

Tonight 9 May Flathead/Mission Valleys

Mostly cloudy. Lows in the mid 40s to lower 50s.

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Flathead Lake - Wild Horse Island State Park Temperature Statistics

May Temperature

Kalispell, Glacier Park International Airport (31.7 miles)

  • Lowest 6 May, 2025

    26.1 °F

  • Average May

    52.6 °F

  • Highest 3 May, 2025

    79.6 °F

Climate (2020–Present)

Kalispell, Glacier Park International Airport (31.7 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    56.5 °F
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