Bellevue Weather Forecast

    • 58
    • 77

    Increasing Clouds

    • 56
    • 70

    Mostly Cloudy

    • 55
    • 69

    Chance Rain

    • 55
    • 69

    Chance Rain

    • 54
    • 70

    Partly Sunny

    • 54
    • 71

    Partly Sunny

    • 54
    • 72

    Partly Sunny

Today 9 Sep Eastside

Mostly sunny. Patchy fog in the morning. Highs in the mid 70s to lower 80s. Light wind.

Tonight 9 Sep Eastside

Mostly cloudy. Lows in the mid to upper 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bellevue Temperature Statistics

September Temperature

Boeing Field - King County International Airport (6.8 miles)

  • Lowest 5 September, 2026

    53.1 °F

  • Average September

    62.1 °F

  • Highest 6 September, 2026

    73 °F

Climate (2021–2026)

Boeing Field - King County International Airport (6.8 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
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