Portland State Game Area Weather Forecast

    • 46
    • 62

    Decreasing Clouds

    • 48
    • 63

    Partly Sunny

    • 46
    • 63

    Partly Sunny

    • 45
    • 65

    Partly Sunny

    • 43
    • 67

    Partly Sunny

    • 46
    • 69

    Partly Sunny

Today 21 Sep Ionia

Mostly cloudy. Highs in the lower 60s. Northeast Winds around 15 Mph with Gusts to around 30 Mph.

Tonight 21 Sep Ionia

Partly cloudy. Lows in the mid 40s. Northeast Winds 10 to 15 Mph with Gusts to around 30 Mph.

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Portland State Game Area Temperature Statistics

September Temperature

Ionia County Airport (10.6 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    67.8 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Ionia County Airport (10.6 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    59 °F
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