Harper Lake Weather Forecast

    • 45
    • 73

    Decreasing Clouds

    • 47
    • 71

    Rain Showers

    • 50
    • 63

    Rain Showers

    • 47
    • 68

    Mostly Cloudy

    • 46
    • 66

    Chance Rain Showers

    • 49
    • 68

    Slight Chance Thunderstorms

Today 17 Sep Lake

Mostly cloudy with a 30 percent chance of rain Showers in the Morning, then mostly sunny in the afternoon. Highs in the lower 70s. Light Winds.

Tonight 17 Sep Lake

Partly cloudy. Lows in the mid 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harper Lake Temperature Statistics

September Temperature

Manistee County - Blacker Airport (16.2 miles)

  • Lowest 14 September, 2026

    41 °F

  • Average September

    66.3 °F

  • Highest 1 September, 2026

    86 °F

Climate (2021–2026)

Manistee County - Blacker Airport (16.2 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    56.1 °F
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