Old Mission Harbor Weather Forecast

    • 66
    • 77

    Rain Showers Likely

    • 67
    • 83

    Rain Showers Likely

    • 67
    • 84

    Chance Thunderstorms

    • 63
    • 80

    Chance Thunderstorms

    • 62
    • 76

    Slight Chance Rain Showers

    • 62
    • 77

    Partly Sunny

Today 30 Aug Grand Traverse

Patchy fog early. Light rain Showers likely Early, then rain Showers likely and slight chance of Thunderstorms in the afternoon. Highs in the upper 70s. South Winds up to 10 Mph with Gusts to around 20 Mph. Chance of precipitation 70 percent.

Tonight 30 Aug Grand Traverse

Mostly cloudy. Chance of rain Showers Early, then rain Showers likely and slight chance of Thunderstorms after midnight. Patchy fog through the night. Lows in the mid 60s. Light Winds. Chance of precipitation 70 percent.

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Old Mission Harbor Temperature Statistics

August Temperature

Bellaire, Antrim County Airport (13.7 miles)

  • Lowest 20 August, 2026

    46.6 °F

  • Average August

    68.1 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

Bellaire, Antrim County Airport (13.7 miles)

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  • Average Low 2021–2026

    37.6 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    56.4 °F
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