Olallie State Park Weather Forecast

    • 40
    • 49

    Rain Showers

    • 43
    • 57

    Chance Rain

    • 45
    • 58

    Rain

    • 42
    • 54

    Rain

    • 44
    • 56

    Rain Likely

    • 45
    • 63

    Chance Rain

    • 49
    • 70

    Mostly Sunny

Today 6 Jun Foothills and Valleys of Central King County

A chance of Showers in the Morning, then Showers likely in the morning. Showers and a chance of Thunderstorms in the afternoon. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Highs in the mid to upper 50s. South wind to 10 Mph becoming southwest in the afternoon.

Tonight 6 Jun Foothills and Valleys of Central King County

Mostly cloudy. Showers and a slight chance of Thunderstorms in the Evening, then a chance of rain late in the evening. A slight chance of rain after midnight. Rainfall Amounts less than a tenth of an inch Likely, except higher Amounts possible in Thunderstorms. Lows in the lower to mid 40s. Light wind becoming south to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Olallie State Park Temperature Statistics

June Temperature

Stampede Pass (18.6 miles)

  • Lowest 4 June, 2026

    39.9 °F

  • Average June

    52.3 °F

  • Highest 2 June, 2026

    69.1 °F

Climate (2021–Present)

Stampede Pass (18.6 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    41.6 °F

  • Average High 2021–2026

    48.4 °F
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