Grand Haven Weather Forecast

    • 60
    • 78

    Increasing Clouds

    • 58
    • 81

    Chance Rain Showers

    • 59
    • 78

    Chance Rain Showers

    • 61
    • 76

    Rain Showers Likely

    • 61
    • 74

    Chance Rain Showers

    • 58
    • 72

    Slight Chance Thunderstorms

Today 18 Sep Ottawa

Mostly sunny. Highs in the upper 70s near lake Michigan in the mid 80s inland. Light Winds becoming west 5 to 10 Mph in the afternoon.

Tonight 18 Sep Ottawa

Partly cloudy. Patchy fog after midnight. Lows around 60. Northwest Winds around 10 Mph becoming east after midnight.

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  • Temperature Real-Time

Grand Haven Temperature Statistics

September Temperature

Muskegon, Muskegon County Airport (7.5 miles)

  • Lowest 8 September, 2025

    39.9 °F

  • Average September

    62.3 °F

  • Highest 14 September, 2025

    84.9 °F

Climate (2020–Present)

Muskegon, Muskegon County Airport (7.5 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    60 °F
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