Grass Lake Weather Forecast

    • 39
    • 61

    Slight Chance Rain Showers

    • 37
    • 64

    Slight Chance Rain Showers

    • 42
    • 70

    Mostly Sunny

    • 49
    • 75

    Mostly Cloudy

    • 50
    • 77

    Partly Sunny

    • 42
    • 69

    Partly Sunny

    • 44
    • 69

    Partly Sunny

Today 6 Sep Ogemaw

Mostly cloudy. Slight chance of rain Showers Early, then chance of rain Showers in the afternoon. Highs in the upper 50s. West Winds 5 to 15 Mph with Gusts to around 25 Mph. Chance of Showers 50 percent.

Tonight 6 Sep Ogemaw

Partly cloudy. A 40 percent chance of rain Showers early. Lows in the upper 30s. Light Winds.

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  • Temperature Real-Time

Grass Lake Temperature Statistics

September Temperature

Houghton Lake, Roscommon County Airport (31.1 miles)

  • Lowest 4 September, 2025

    42.1 °F

  • Average September

    58.3 °F

  • Highest 2 September, 2025

    78.1 °F

Climate (2020–Present)

Houghton Lake, Roscommon County Airport (31.1 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    46.1 °F

  • Average High 2020–2025

    55.6 °F
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