Portland Weather Forecast

    • 55
    • 72

    Mostly Cloudy

    • 53
    • 72

    Partly Sunny

    • 55
    • 73

    Mostly Sunny

    • 62
    • 74

    Rain Showers Likely

    • 62
    • 72

    Rain Showers Likely

    • 57
    • 72

    Rain Showers Likely

    • 54
    • 68

    Chance Rain Showers

Today 26 Sep Whiteside

Partly sunny. Near steady temperature in the upper 60s. Southeast Winds around 5 Mph.

Tonight 26 Sep Whiteside

Mostly cloudy. Lows in the mid 50s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Temperature Statistics

September Temperature

Sterling Rockfalls (16.8 miles)

  • Lowest 14 September, 2026

    48.9 °F

  • Average September

    70.4 °F

  • Highest 2 September, 2026

    96.1 °F

Climate (2021–2026)

Sterling Rockfalls (16.8 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.1 °F
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