Portland Weather Forecast

    • 64
    • 79

    Rain Showers

    • 56
    • 68

    Rain Showers Likely

    • 52
    • 64

    Rain Showers Likely

    • 49
    • 63

    Partly Sunny

    • 51
    • 65

    Partly Sunny

    • 54
    • 68

    Partly Sunny

    • 54
    • 71

    Partly Sunny

Today 19 Sep Whiteside

Partly cloudy. Lows in the lower 50s. Highs in the lower 70s.

Tonight 19 Sep Whiteside

Showers likely with a chance of Thunderstorms Early, then Showers with Thunderstorms likely. Patchy fog after midnight. Some Thunderstorms may produce heavy rainfall early. Some Thunderstorms may produce heavy rainfall. Humid with Lows in the mid 60s. Southeast Winds around 5 Mph, becoming northwest after midnight. Chance of rain near 100 percent.

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Portland Temperature Statistics

September Temperature

Sterling Rockfalls (16.8 miles)

  • Lowest 14 September, 2026

    48.9 °F

  • Average September

    73.3 °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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