Lake Arrowhead Weather Forecast

    • 53
    • 72

    Chance Rain Showers

    • 55
    • 75

    Chance Rain Showers

    • 53
    • 71

    Chance Rain Showers

    • 52
    • 73

    Mostly Cloudy

    • 52
    • 76

    Mostly Cloudy

    • 53
    • 75

    Slight Chance Rain Showers

Today 7 Sep Middle Chehalis River Valley

Mostly cloudy with a slight chance of Showers. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 7 Sep Middle Chehalis River Valley

Mostly cloudy. Lows in the lower to mid 50s. West wind to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Arrowhead Temperature Statistics

September Temperature

Shelton, Shelton Sanderson Field (11.8 miles)

  • Lowest 3 September, 2025

    54 °F

  • Average September

    64.5 °F

  • Highest 3 September, 2025

    84 °F

Climate (2020–Present)

Shelton, Shelton Sanderson Field (11.8 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    51.1 °F

  • Average High 2020–2025

    61.2 °F
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