Grass Island Weather Forecast

    • 54
    • 68

    Mostly Sunny

    • 60
    • 81

    Mostly Sunny

    • 66
    • 82

    Mostly Sunny

    • 65
    • 90

    Slight Chance Thunderstorms

    • 66
    • 90

    Slight Chance Thunderstorms

    • 63
    • 88

    Mostly Sunny

    • 62
    • 86

    Partly Sunny

Today 22 Jul Mille Lacs

Sunny. Highs in the mid 70s. Northwest Winds up to 5 Mph.

Tonight 22 Jul Mille Lacs

Clear. Lows in the lower 50s. Southwest Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Island Temperature Statistics

July Temperature

Brainerd - Crow Wing County Airport (23.6 miles)

  • Lowest 9 July, 2026

    55.7 °F

  • Average July

    74.9 °F

  • Highest 17 July, 2026

    95.6 °F

Climate (2021–2026)

Brainerd - Crow Wing County Airport (23.6 miles)

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  • Average Low 2021–2026

    34.4 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    54.6 °F
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