Issaquah Highlands Weather Forecast

    • 47
    • 60

    Rain Showers

    • 49
    • 62

    Rain Showers

    • 51
    • 72

    Chance Rain Showers

    • 54
    • 79

    Mostly Sunny

    • 55
    • 86

    Partly Sunny

    • 54
    • 77

    Mostly Cloudy

Today 20 Jun Foothills and Valleys of Central King County

Mostly cloudy with a chance of Showers until late Afternoon, then mostly cloudy with Showers late in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs near 60. South wind around 10 Mph becoming west in the afternoon.

Tonight 20 Jun Foothills and Valleys of Central King County

Showers likely and a slight chance of Thunderstorms in the Evening, then Showers after midnight. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Lows near 50. Light wind becoming south around 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Issaquah Highlands Temperature Statistics

June Temperature

Renton Municipal Airport (10.6 miles)

  • Lowest 1 June, 2025

    47.6 °F

  • Average June

    63.9 °F

  • Highest 8 June, 2025

    89.7 °F

Climate (2020–Present)

Renton Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    62.1 °F
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