Oregon State University Weather Forecast

    • 49
    • 81

    Partly Sunny

    • 51
    • 70

    Mostly Cloudy

    • 50
    • 61

    Rain Showers

    • 50
    • 67

    Partly Sunny

    • 51
    • 71

    Mostly Sunny

    • 52
    • 71

    Partly Sunny

Today 10 Sep Benton County Lowlands

Mostly sunny. Highs in the lower 80s. North wind 5 to 10 Mph.

Tonight 10 Sep Benton County Lowlands

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 40s. Northwest wind 5 to 10 Mph.

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Oregon State University Temperature Statistics

September Temperature

Corvallis, Corvallis Municipal Airport (4.3 miles)

  • Lowest 7 September, 2026

    53.1 °F

  • Average September

    58.9 °F

  • Highest 7 September, 2026

    73.9 °F

Climate (2021–2026)

Corvallis, Corvallis Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    63.9 °F
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