Grass Lake Weather Forecast

    • 54
    • 77

    Chance Rain Showers

    • 56
    • 77

    Partly Sunny

    • 58
    • 78

    Partly Sunny

    • 66
    • 81

    Mostly Cloudy

    • 64
    • 85

    Slight Chance Rain Showers

    • 54
    • 77

    Partly Sunny

Today 5 Sep Livingston

Mostly cloudy with a slight chance of Showers in the Morning, then partly cloudy in the afternoon. Highs in the upper 70s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 5 Sep Livingston

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northeast Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

September Temperature

Howell, Livingston County Airport (6.2 miles)

  • Lowest 1 September, 2026

    69.8 °F

  • Average September

    79.3 °F

  • Highest 2 September, 2026

    91.4 °F

Climate (2021–2026)

Howell, Livingston County Airport (6.2 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    59.2 °F
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