Big Arm Weather Forecast

    • 33
    • 50

    Rain Showers

    • 32
    • 44

    Snow Likely

    • 32
    • 50

    Chance Snow Showers

    • 37
    • 56

    Partly Sunny

    • 43
    • 63

    Mostly Cloudy

    • 44
    • 65

    Chance Rain

Today 15 Apr Flathead/Mission Valleys

Rain and snow likely in the Morning, then rain Showers, snow Showers likely and a slight chance of Thunderstorms in the afternoon. Chance of precipitation 90 percent. No snow accumulation. Highs in the mid 40s to lower 50s. Southwest Winds to 15 Mph in the afternoon.

Tonight 15 Apr Flathead/Mission Valleys

Rain and snow likely in the Evening, then a chance of snow after midnight. Chance of precipitation 70 percent. Little or no new snow accumulation. Lows in the mid 20s to lower 30s.

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Big Arm Temperature Statistics

April Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 8 April, 2026

    20.6 °F

  • Average April

    44.6 °F

  • Highest 6 April, 2026

    67.6 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (34.8 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.2 °F
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