Lake Arrowhead Weather Forecast

    • 42
    • 69

    Increasing Clouds

    • 42
    • 70

    Partly Sunny

    • 43
    • 65

    Mostly Cloudy

    • 45
    • 73

    Partly Sunny

    • 46
    • 73

    Partly Sunny

    • 46
    • 74

    Partly Sunny

Today 17 May Middle Chehalis River Valley

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 17 May Middle Chehalis River Valley

Mostly cloudy. Lows in the upper 30s to mid 40s. West wind to 10 Mph. Gusts to 20 Mph in the evening.

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Lake Arrowhead Temperature Statistics

May Temperature

Shelton, Shelton Sanderson Field (11.8 miles)

  • Lowest 9 May, 2026

    39.9 °F

  • Average May

    56.9 °F

  • Highest 3 May, 2026

    84 °F

Climate (2021–Present)

Shelton, Shelton Sanderson Field (11.8 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    61.3 °F
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