Portland Weather Forecast

    • 47
    • 67

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 43
    • 67

    Mostly Sunny

    • 44
    • 69

    Partly Sunny

    • 45
    • 69

    Partly Sunny

    • 48
    • 70

    Mostly Sunny

    • 56
    • 72

    Partly Sunny

Today 23 Sep Ionia

Rain Showers likely. Highs in the upper 60s. Chance of rain 60 percent.

Tonight 23 Sep Ionia

Mostly clear. Lows in the upper 40s. East Winds 5 to 15 Mph with Gusts to around 25 Mph.

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Portland Temperature Statistics

September Temperature

Ionia County Airport (9.3 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    66.3 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Ionia County Airport (9.3 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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