Lake Washington Weather Forecast

    • 53
    • 66

    Rain

    • 48
    • 66

    Slight Chance Rain Showers

    • 47
    • 63

    Slight Chance Rain Showers

    • 46
    • 64

    Mostly Cloudy

    • 47
    • 63

    Chance Rain Showers

    • 49
    • 64

    Chance Rain Showers

Today 20 Sep Orange

Showers. Highs in the mid 60s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

Tonight 20 Sep Orange

Mostly cloudy. Rain in the Evening, then a chance of Showers after midnight. Lows in the lower 50s. Northeast Winds 5 to 10 Mph. Gusts up to 25 Mph after midnight. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Washington Temperature Statistics

September Temperature

Newburgh / Stewart (1.2 miles)

  • Lowest 15 September, 2026

    46.4 °F

  • Average September

    68.4 °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

    61.3 °F
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