Mason Lake Weather Forecast

    • 54
    • 80

    Increasing Clouds

    • 53
    • 73

    Partly Sunny

    • 51
    • 71

    Partly Sunny

    • 50
    • 72

    Partly Sunny

    • 51
    • 74

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

Today 23 Jul Olympia and Southern Puget Sound

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

Tonight 23 Jul Olympia and Southern Puget Sound

Mostly clear. Lows in the lower to mid 50s. West wind to 10 Mph becoming southwest after midnight.

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Mason Lake Temperature Statistics

July Temperature

Shelton, Shelton Sanderson Field (10.6 miles)

  • Lowest 3 July, 2025

    45.6 °F

  • Average July

    66.1 °F

  • Highest 13 July, 2025

    93.7 °F

Climate (2020–Present)

Shelton, Shelton Sanderson Field (10.6 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    61.2 °F
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