Grant Lake Weather Forecast

    • 64
    • 81

    Chance Thunderstorms

    • 61
    • 79

    Chance Rain Showers

    • 57
    • 80

    Chance Rain Showers

    • 59
    • 81

    Chance Rain Showers

    • 58
    • 76

    Rain Showers Likely

    • 57
    • 77

    Chance Rain Showers

Today 3 Sep Iron

Partly sunny with a slight chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the upper 70s. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 3 Sep Iron

Mostly cloudy with a chance of Showers and Thunderstorms. Patchy fog after midnight. Humid with Lows in the lower 60s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

September Temperature

Manitowish Waters Airport (9.3 miles)

  • Lowest 1 September, 2026

    56.8 °F

  • Average September

    69.9 °F

  • Highest 1 September, 2026

    92.7 °F

Climate (2021–2026)

Manitowish Waters Airport (9.3 miles)

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  • Average Low 2021–2026

    29.7 °F

  • Average 2021–2026

    40.6 °F

  • Average High 2021–2026

    50.2 °F
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