Grant Lake Weather Forecast

    • 48
    • 66

    Chance Rain Showers

    • 48
    • 73

    Partly Sunny

    • 47
    • 72

    Mostly Cloudy

    • 47
    • 68

    Mostly Cloudy

    • 52
    • 72

    Mostly Cloudy

    • 52
    • 67

    Rain Showers Likely

    • 46
    • 63

    Chance Rain Showers

Today 24 Sep Iron

Mostly cloudy. Near steady temperature in the mid 60s. South Winds around 5 Mph.

Tonight 24 Sep Iron

Mostly cloudy. A chance of Showers in the evening. Lows in the upper 40s. South Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

September Temperature

Manitowish Waters Airport (9.3 miles)

  • Lowest 22 September, 2026

    34.3 °F

  • Average September

    64.8 °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

    29.8 °F

  • Average 2021–2026

    40.7 °F

  • Average High 2021–2026

    50.3 °F
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