Lake Washington Weather Forecast

    • 62
    • 83

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 53
    • 76

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

    • 58
    • 80

    Mostly Cloudy

    • 66
    • 80

    Chance Rain Showers

    • 57
    • 82

    Slight Chance Rain Showers

Today 4 Sep Orange

Sunny. Near steady temperature around 80. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 4 Sep Orange

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Washington Temperature Statistics

September Temperature

Newburgh / Stewart (1.2 miles)

  • Lowest 2 September, 2026

    62.6 °F

  • Average September

    68.1 °F

  • Highest 1 September, 2026

    80.6 °F

Climate (2021–2026)

Newburgh / Stewart (1.2 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    61.3 °F
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