Mill Bay Weather Forecast

    • 13
    • 28

    Snow Showers

    • 1
    • 21

    Partly Sunny

    • 6
    • 21

    Mostly Cloudy

    • 3
    • 20

    Mostly Cloudy

    • 4
    • 21

    Mostly Cloudy

    • 12
    • 24

    Chance Snow Showers

Today 31 Dec Northern Washington

Mostly cloudy with a 30 percent chance of snow Showers. Cold. Near steady temperature in the mid 20s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 31 Dec Northern Washington

Snow. Total snow accumulation around an inch. Cold with Lows around 13. South Winds 5 to 10 Mph. Gusts up to 25 Mph after midnight. Chance of snow 90 percent.

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Mill Bay Temperature Statistics

December Temperature

Middlebury State Airport (21.7 miles)

  • Lowest 9 December, 2025

    -6.5 °F

  • Average December

    22.6 °F

  • Highest 19 December, 2025

    58.3 °F

Climate (2020–Present)

Middlebury State Airport (21.7 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    45.8 °F

  • Average High 2020–2025

    54.6 °F
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