Oakville Weather Forecast

    • 47
    • 77

    Increasing Clouds

    • 51
    • 74

    Mostly Cloudy

    • 47
    • 70

    Mostly Cloudy

    • 46
    • 69

    Mostly Cloudy

    • 48
    • 67

    Chance Rain

    • 45
    • 64

    Chance Rain

Today 20 Sep Middle Chehalis River Valley

Mostly cloudy in the morning then becoming mostly sunny. Areas of fog in the morning. Highs in the mid 60s to lower 70s. Light wind.

Tonight 20 Sep Middle Chehalis River Valley

Mostly clear in the evening then becoming mostly cloudy. Areas of fog in the morning. Lows in the 40s. Light wind.

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Oakville Temperature Statistics

September Temperature

Chehalis-Centralia Airport (16.2 miles)

  • Lowest 5 September, 2026

    46.4 °F

  • Average September

    59.7 °F

  • Highest 9 September, 2026

    82.4 °F

Climate (2021–2026)

Chehalis-Centralia Airport (16.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    61.3 °F
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