Bellevue Weather Forecast

    • 49
    • 62

    Rain Showers

    • 47
    • 64

    Partly Sunny

    • 49
    • 64

    Partly Sunny

    • 53
    • 64

    Mostly Cloudy

    • 53
    • 63

    Chance Rain

    • 52
    • 65

    Mostly Cloudy

Today 25 Sep Eastside

A chance of rain in the Morning, then rain likely late in the morning. Showers and a slight chance of Thunderstorms in the afternoon. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Highs in the lower to mid 60s. Light wind becoming south to 10 Mph with Gusts to 20 Mph in the afternoon.

Tonight 25 Sep Eastside

Mostly cloudy with rain likely in the Evening, then mostly cloudy after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid 40s to lower 50s. South wind to 10 Mph with Gusts to 20 Mph.

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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 19 September, 2026

    52 °F

  • Average September

    62.2 °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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