Monroe Weather Forecast

    • 51
    • 81

    Mostly Sunny

    • 51
    • 78

    Mostly Sunny

    • 50
    • 82

    Mostly Sunny

    • 54
    • 80

    Partly Sunny

    • 51
    • 75

    Partly Sunny

    • 52
    • 80

    Mostly Sunny

    • 55
    • 78

    Chance Rain

Today 17 Sep Benton County Lowlands

Sunny. Highs in the lower 80s. Northwest wind 5 to 10 Mph.

Tonight 17 Sep Benton County Lowlands

Mostly clear. Lows in the lower 50s. Northwest wind 10 to 15 Mph.

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Monroe Temperature Statistics

September Temperature

Corvallis, Corvallis Municipal Airport (12.4 miles)

  • Lowest 13 September, 2025

    46 °F

  • Average September

    65.5 °F

  • Highest 4 September, 2025

    93 °F

Climate (2020–Present)

Corvallis, Corvallis Municipal Airport (12.4 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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