Skookumchuck Reservoir Weather Forecast

    • 59
    • 69

    Rain

    • 53
    • 72

    Chance Rain

    • 53
    • 73

    Mostly Cloudy

    • 54
    • 72

    Mostly Cloudy

    • 53
    • 75

    Partly Sunny

    • 51
    • 76

    Mostly Sunny

Today 15 Aug Foothills and Valleys of Thurston and Lewis Counties

Rain likely in the Morning, then a chance of rain early in the afternoon. Rain at Times late in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs near 70. South wind 10 to 15 Mph with Gusts to 25 Mph.

Tonight 15 Aug Foothills and Valleys of Thurston and Lewis Counties

Rain. Rainfall Amounts one to three Inches possible. Lows in the upper 50s. South wind 10 to 15 Mph with Gusts to 25 Mph.

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Skookumchuck Reservoir Temperature Statistics

August Temperature

Chehalis-Centralia Airport (15.5 miles)

  • Lowest 8 August, 2025

    48.2 °F

  • Average August

    67.1 °F

  • Highest 12 August, 2025

    95 °F

Climate (2020–Present)

Chehalis-Centralia Airport (15.5 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    61.4 °F
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