Monmouth Weather Forecast

    • 54
    • 78

    Increasing Clouds

    • 54
    • 80

    Partly Sunny

    • 55
    • 89

    Mostly Sunny

    • 53
    • 86

    Partly Sunny

    • 51
    • 79

    Partly Sunny

    • 50
    • 79

    Mostly Sunny

Today 22 Aug West Central Willamette Valley

Mostly sunny. Highs in the upper 70s. Southwest wind 5 to 10 Mph.

Tonight 22 Aug West Central Willamette Valley

Mostly clear. Lows in the mid 50s. Winds light.

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Monmouth Temperature Statistics

August Temperature

Salem - McNary Field (11.8 miles)

  • Lowest 3 August, 2026

    50.6 °F

  • Average August

    70.9 °F

  • Highest 6 August, 2026

    95.6 °F

Climate (2021–2026)

Salem - McNary Field (11.8 miles)

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  • Average Low 2021–2026

    45.7 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    65.7 °F
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