Iowa Lake State Game Management Area Weather Forecast

    • 67
    • 86

    Chance Thunderstorms

    • 63
    • 87

    Mostly Sunny

    • 61
    • 89

    Chance Thunderstorms

    • 58
    • 78

    Rain Showers Likely

    • 56
    • 74

    Chance Rain Showers

    • 51
    • 73

    Partly Sunny

Today 14 Sep Osceola

Partly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the upper 80s. South Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 14 Sep Osceola

Mostly cloudy. Lows in the mid 60s. South Winds 5 to 10 Mph.

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Iowa Lake State Game Management Area Temperature Statistics

September Temperature

Worthington, Worthington Municipal Airport (11.8 miles)

  • Lowest 7 September, 2025

    36 °F

  • Average September

    59.5 °F

  • Highest 11 September, 2025

    82 °F

Climate (2020–Present)

Worthington, Worthington Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    36.9 °F

  • Average 2020–2025

    46.9 °F

  • Average High 2020–2025

    57 °F
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