Portland Weather Forecast

    • 71
    • 83

    Rain Showers Likely

    • 63
    • 84

    Slight Chance Thunderstorms

    • 62
    • 81

    Mostly Sunny

    • 66
    • 82

    Rain Showers Likely

    • 58
    • 79

    Slight Chance Thunderstorms

    • 57
    • 75

    Partly Sunny

Today 15 Aug Whiteside

Mostly cloudy. Showers likely with a chance of Thunderstorms this morning. Some Thunderstorms may produce heavy rainfall this morning. Highs in the lower 80s. Southeast Winds around 5 Mph, becoming southwest this afternoon. Chance of rain 70 percent.

Tonight 15 Aug Whiteside

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 60 percent.

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Portland Temperature Statistics

August Temperature

Sterling Rockfalls (16.8 miles)

  • Lowest 3 August, 2026

    59 °F

  • Average August

    73.2 °F

  • Highest 4 August, 2026

    84.9 °F

Climate (2021–2026)

Sterling Rockfalls (16.8 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.2 °F
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