Shagnasty Lake Weather Forecast

    • 53
    • 78

    Partly Sunny

    • 56
    • 80

    Mostly Sunny

    • 61
    • 80

    Chance Rain Showers

    • 55
    • 76

    Slight Chance Thunderstorms

    • 53
    • 75

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

Today 19 Aug Allegan

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

Tonight 19 Aug Allegan

Partly cloudy. Lows in the mid 50s. Northwest Winds around 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Shagnasty Lake Temperature Statistics

August Temperature

Grand Rapids, Gerald R. Ford International Airport (23 miles)

  • Lowest 9 August, 2026

    56.6 °F

  • Average August

    73.5 °F

  • Highest 7 August, 2026

    88.6 °F

Climate (2021–2026)

Grand Rapids, Gerald R. Ford International Airport (23 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.8 °F
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