Cos Cob Harbor Weather Forecast

    • 25
    • 33

    Flurries

    • 19
    • 31

    Mostly Sunny

    • 23
    • 30

    Partly Sunny

    • 21
    • 32

    Mostly Cloudy

    • 22
    • 32

    Partly Sunny

    • 28
    • 36

    Chance Snow

Today 31 Dec Southern Fairfield

Mostly cloudy. Highs in the lower 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 31 Dec Southern Fairfield

Light snow. Snow accumulation up to 1 inch. Lows in the lower 20s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of snow 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cos Cob Harbor Temperature Statistics

December Temperature

White Plains - Westchester County Airport (6.2 miles)

  • Lowest 5 December, 2025

    14 °F

  • Average December

    31.7 °F

  • Highest 19 December, 2025

    55.9 °F

Climate (2020–Present)

White Plains - Westchester County Airport (6.2 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    62.3 °F
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