Portland Weather Forecast

    • 52
    • 74

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

    • 58
    • 81

    Rain Showers Likely

    • 63
    • 81

    Chance Rain Showers

    • 65
    • 83

    Chance Thunderstorms

    • 63
    • 83

    Chance Rain Showers

    • 61
    • 79

    Slight Chance Thunderstorms

Today 5 Aug Cerro Gordo

Mostly sunny. Near steady temperature in the lower 70s. Northeast Winds around 5 Mph.

Tonight 5 Aug Cerro Gordo

Partly cloudy. Patchy fog after midnight. Lows in the lower 50s. North Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Temperature Statistics

August Temperature

Mason City Municipal Airport (9.9 miles)

  • Lowest 2 August, 2026

    58.6 °F

  • Average August

    71.4 °F

  • Highest 3 August, 2026

    82.9 °F

Climate (2021–2026)

Mason City Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    58.6 °F
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