Corvallis Weather Forecast

    • 51
    • 74

    Sunny

    • 54
    • 89

    Sunny

    • 54
    • 82

    Mostly Sunny

    • 54
    • 79

    Partly Sunny

    • 52
    • 79

    Partly Sunny

    • 54
    • 77

    Chance Rain Showers

    • 54
    • 76

    Slight Chance Rain Showers

Today 15 Sep Benton County Lowlands

Sunny. Highs in the mid 70s. North wind 10 to 15 Mph.

Tonight 15 Sep Benton County Lowlands

Clear. Lows around 50. North wind 5 to 10 Mph.

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Corvallis Temperature Statistics

September Temperature

Corvallis, Corvallis Municipal Airport (4.3 miles)

  • Lowest 13 September, 2025

    46 °F

  • Average September

    66 °F

  • Highest 4 September, 2025

    93 °F

Climate (2020–Present)

Corvallis, Corvallis Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    63.9 °F
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