Portland Weather Forecast

    • 68
    • 81

    Rain Showers Likely

    • 60
    • 83

    Rain Showers Likely

    • 56
    • 82

    Mostly Sunny

    • 62
    • 82

    Mostly Cloudy

    • 56
    • 79

    Chance Thunderstorms

    • 55
    • 75

    Partly Sunny

Today 15 Aug Ionia

Mostly cloudy. A chance of Showers and a slight chance of Thunderstorms in the afternoon. Highs in the lower 80s. East Winds 5 to 10 Mph with Gusts to around 20 Mph. Chance of rain 40 percent.

Tonight 15 Aug Ionia

Partly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the upper 60s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 20 percent.

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Portland Temperature Statistics

August Temperature

Ionia County Airport (9.3 miles)

  • Lowest 9 August, 2026

    55.4 °F

  • Average August

    72 °F

  • Highest 4 August, 2026

    86 °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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