Lake Washington Weather Forecast

    • 62
    • 80

    Slight Chance Rain Showers

    • 48
    • 73

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 61
    • 80

    Partly Sunny

    • 62
    • 82

    Chance Rain Showers

    • 56
    • 78

    Slight Chance Thunderstorms

    • 57
    • 73

    Chance Rain Showers

Today 13 Sep Orange

Partly sunny. Highs in the upper 70s. West Winds around 5 Mph.

Tonight 13 Sep Orange

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows around 60. Southwest Winds around 5 Mph, becoming northwest with Gusts up to 20 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Washington Temperature Statistics

September Temperature

Newburgh / Stewart (1.2 miles)

  • Lowest 7 September, 2026

    51.8 °F

  • Average September

    69.1 °F

  • Highest 10 September, 2026

    84.2 °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

    61.4 °F
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