Harmon Lake State Game Management Area Weather Forecast

    • 62
    • 79

    Chance Thunderstorms

    • 61
    • 79

    Rain Showers Likely

    • 59
    • 74

    Chance Thunderstorms

    • 60
    • 77

    Chance Rain Showers

    • 60
    • 80

    Chance Rain Showers

    • 55
    • 81

    Slight Chance Thunderstorms

Today 17 Sep Winnebago

Partly sunny late this Morning, then becoming mostly cloudy. A chance of Showers. A slight chance of Thunderstorms late this Morning, then a chance of Thunderstorms this afternoon. Highs in the lower 80s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 17 Sep Winnebago

Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows in the lower 60s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

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Harmon Lake State Game Management Area Temperature Statistics

September Temperature

Forest City Municipal Airport (16.2 miles)

  • Lowest 7 September, 2025

    35.6 °F

  • Average September

    62.7 °F

  • Highest 13 September, 2025

    91.4 °F

Climate (2020–Present)

Forest City Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    36.6 °F

  • Average 2020–2025

    47.2 °F

  • Average High 2020–2025

    57.2 °F
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