Summit Lake Weather Forecast

    • 54
    • 87

    Becoming Sunny

    • 52
    • 75

    Partly Sunny

    • 51
    • 73

    Mostly Cloudy

    • 52
    • 74

    Mostly Cloudy

    • 52
    • 74

    Partly Sunny

    • 53
    • 79

    Partly Sunny

Today 17 Jul Willapa and Black Hills

Mostly sunny. Areas of fog in the morning. Highs in the mid 70s to lower 80s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 17 Jul Willapa and Black Hills

Mostly clear. Lows in the lower to mid 50s. West wind to 10 Mph.

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Summit Lake Temperature Statistics

July Temperature

Olympia, Olympia Airport (10.6 miles)

  • Lowest 3 July, 2025

    45 °F

  • Average July

    66.2 °F

  • Highest 13 July, 2025

    91 °F

Climate (2020–Present)

Olympia, Olympia Airport (10.6 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    62 °F
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