Grant Lake Weather Forecast

    • 37
    • 64

    Increasing Clouds

    • 42
    • 66

    Mostly Cloudy

    • 45
    • 63

    Rain Showers Likely

    • 47
    • 70

    Slight Chance Thunderstorms

    • 54
    • 80

    Slight Chance Thunderstorms

    • 56
    • 84

    Partly Sunny

Today 21 May Iron

Areas of frost in the morning. Mostly sunny. Highs in the mid 60s. South Winds around 5 Mph.

Tonight 21 May Iron

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

May Temperature

Manitowish Waters Airport (9.3 miles)

  • Lowest 2 May, 2026

    22.8 °F

  • Average May

    46.6 °F

  • Highest 15 May, 2026

    80.4 °F

Climate (2021–Present)

Manitowish Waters Airport (9.3 miles)

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  • Average Low 2021–2026

    29.6 °F

  • Average 2021–2026

    40.6 °F

  • Average High 2021–2026

    50.2 °F
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