Grand Falls Weather Forecast

    • 38
    • 62

    Mostly Sunny

    • 41
    • 69

    Partly Sunny

    • 43
    • 69

    Chance Rain Showers

    • 43
    • 62

    Chance Rain Showers

    • 50
    • 73

    Partly Sunny

    • 55
    • 81

    Partly Sunny

Today 20 May Koochiching

Sunny. Not as cool with Highs in the lower 60s. West Winds around 5 Mph.

Tonight 20 May Koochiching

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 30s. South Winds around 5 Mph.

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Grand Falls Temperature Statistics

May Temperature

Bigfork Municipal Airport (29.2 miles)

  • Lowest 1 May, 2026

    20.8 °F

  • Average May

    48.8 °F

  • Highest 15 May, 2026

    79.3 °F

Climate (2021–Present)

Bigfork Municipal Airport (29.2 miles)

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  • Average Low 2021–2026

    32.7 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    54.3 °F
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