Monmouth Weather Forecast

    • 54
    • 85

    Increasing Clouds

    • 52
    • 79

    Mostly Cloudy

    • 52
    • 79

    Partly Sunny

    • 56
    • 82

    Partly Sunny

    • 58
    • 84

    Mostly Cloudy

    • 61
    • 84

    Partly Sunny

Today 2 Aug West Central Willamette Valley

Sunny. Highs in the mid 80s. North wind 5 to 10 Mph.

Tonight 2 Aug West Central Willamette Valley

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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Monmouth Temperature Statistics

August Temperature

Salem - McNary Field (11.8 miles)

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  • Average August

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Climate (2020–Present)

Salem - McNary Field (11.8 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    65.5 °F
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