Grass Lake Weather Forecast

    • 62
    • 80

    Mostly Sunny

    • 68
    • 78

    Chance Rain Showers

    • 62
    • 80

    Chance Rain Showers

    • 63
    • 78

    Mostly Sunny

    • 64
    • 78

    Rain Showers Likely

    • 61
    • 72

    Chance Rain Showers

    • 61
    • 70

    Partly Sunny

Today 14 Aug Alpena

Mostly sunny. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 14 Aug Alpena

Mostly clear. Patchy fog. Lows in the mid 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

August Temperature

Alpena, Alpena County Regional Airport (11.2 miles)

  • Lowest 3 August, 2026

    52.6 °F

  • Average August

    69.4 °F

  • Highest 4 August, 2026

    86.6 °F

Climate (2021–2026)

Alpena, Alpena County Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    36.8 °F

  • Average 2021–2026

    46.6 °F

  • Average High 2021–2026

    56.3 °F
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