Shagnasty Lake Weather Forecast

    • 53
    • 78

    Partly Sunny

    • 56
    • 80

    Mostly Sunny

    • 61
    • 80

    Chance Rain Showers

    • 55
    • 76

    Slight Chance Thunderstorms

    • 52
    • 76

    Mostly Sunny

    • 55
    • 77

    Partly Sunny

    • 60
    • 79

    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.

Graph Plots Open in Graphs

  • 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)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.8 °F
Get WillyWeather+ to remove ads