Lake Washington Weather Forecast

    • 23
    • 42

    Becoming Sunny

    • 38
    • 49

    Rain Likely

    • 40
    • 56

    Chance Rain

    • 46
    • 56

    Rain

    • 56
    • 63

    Rain Likely

    • 42
    • 64

    Chance Rain

Today 21 Dec Putnam

Sunny, cooler with Highs in the lower 40s. Northwest Winds around 5 Mph.

Tonight 21 Dec Putnam

Mostly clear. Colder with Lows in the lower 20s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Washington Temperature Statistics

December Temperature

Charleston, Yeager Airport (21.7 miles)

  • Lowest 15 December, 2025

    3 °F

  • Average December

    32.5 °F

  • Highest 18 December, 2025

    62.1 °F

Climate (2020–Present)

Charleston, Yeager Airport (21.7 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    68 °F
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