Bellevue Weather Forecast

    • 53
    • 68

    Mostly Cloudy

    • 52
    • 68

    Mostly Cloudy

    • 52
    • 63

    Chance Rain

    • 49
    • 63

    Chance Rain

    • 49
    • 63

    Partly Sunny

Today 22 Sep Eastside

Partly sunny. A slight chance of rain in the morning. Highs near 70. Light wind.

Tonight 22 Sep Eastside

Mostly cloudy. Lows in the lower to mid 50s. Light wind becoming south around 10 Mph after midnight.

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  • Temperature Real-Time

Bellevue Temperature Statistics

September Temperature

Boeing Field - King County International Airport (6.8 miles)

  • Lowest 19 September, 2026

    52 °F

  • Average September

    62.3 °F

  • Highest 9 September, 2026

    78.1 °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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