Grass Lake Weather Forecast

    • 55
    • 87

    Mostly Sunny

    • 52
    • 85

    Mostly Sunny

    • 50
    • 76

    Partly Sunny

    • 50
    • 77

    Mostly Sunny

    • 51
    • 78

    Partly Sunny

    • 52
    • 77

    Partly Sunny

Today 30 Jun Olympia and Southern Puget Sound

Sunny. Highs in the 80s to lower 90s. Light wind becoming north to 10 Mph in the afternoon.

Tonight 30 Jun Olympia and Southern Puget Sound

Mostly clear. Lows in the mid to upper 50s. North wind to 10 Mph in the evening becoming light.

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Grass Lake Temperature Statistics

June Temperature

Olympia, Olympia Airport (6.2 miles)

  • Lowest 14 June, 2025

    36.6 °F

  • Average June

    60.4 °F

  • Highest 9 June, 2025

    93.7 °F

Climate (2020–Present)

Olympia, Olympia Airport (6.2 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    61.9 °F
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