Harstine Island Weather Forecast

    • 55
    • 67

    Chance Rain Showers

    • 58
    • 68

    Rain Showers Likely

    • 56
    • 64

    Rain Showers Likely

    • 55
    • 67

    Chance Rain Showers

    • 55
    • 69

    Chance Rain Showers

Today 7 Sep Olympia and Southern Puget Sound

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the upper 60s to mid 70s. Light wind becoming southwest to 10 Mph in the afternoon.

Tonight 7 Sep Olympia and Southern Puget Sound

Partly cloudy. A slight chance of Showers in the evening. Lows in the lower to mid 50s. West wind to 10 Mph in the evening becoming light.

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Harstine Island 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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