Portland Weather Forecast

    • 57
    • 82

    Becoming Sunny

    • 59
    • 85

    Mostly Sunny

    • 55
    • 86

    Chance Rain Showers

    • 50
    • 79

    Mostly Sunny

    • 50
    • 78

    Partly Sunny

    • 50
    • 75

    Partly Sunny

Today 25 May Ionia

Partly sunny in the morning then clearing. Areas of dense fog in the morning. Highs in the lower 80s. Light Winds becoming southwest 5 to 10 Mph with Gusts to around 20 Mph in the afternoon.

Tonight 25 May Ionia

Mostly clear. Lows in the mid 50s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Temperature Statistics

May Temperature

Ionia County Airport (9.3 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    55 °F

  • Highest 17 May, 2026

    84.2 °F

Climate (2021–Present)

Ionia County Airport (9.3 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    59 °F
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