Grant Lake Weather Forecast

    • 57
    • 82

    Slight Chance Thunderstorms

    • 53
    • 69

    Chance Thunderstorms

    • 53
    • 69

    Chance Rain Showers

    • 55
    • 69

    Chance Rain Showers

    • 55
    • 70

    Chance Rain Showers

    • 52
    • 72

    Chance Rain Showers

    • 48
    • 67

    Partly Sunny

Today 17 Sep Iron

Mostly sunny. Near steady temperature in the upper 70s. North Winds around 5 Mph.

Tonight 17 Sep Iron

A slight chance of Thunderstorms late this evening. Mostly cloudy with a slight chance of Showers. Lows in the upper 50s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

September Temperature

Manitowish Waters Airport (9.3 miles)

  • Lowest 7 September, 2025

    36.9 °F

  • Average September

    56 °F

  • Highest 15 September, 2025

    81 °F

Climate (2020–Present)

Manitowish Waters Airport (9.3 miles)

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  • Average Low 2020–2025

    29.6 °F

  • Average 2020–2025

    40.5 °F

  • Average High 2020–2025

    50.1 °F
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