Grass Island Weather Forecast

    • 34
    • 39

    Rain

    • 29
    • 49

    Rain

    • 28
    • 32

    Breezy

    • 27
    • 35

    Mostly Cloudy

    • 23
    • 33

    Chance Snow

    • 23
    • 30

    Partly Sunny

Today 28 Dec Southern Fairfield

Partly sunny in the Morning, then mostly cloudy with a slight chance of rain in the afternoon. Highs in the upper 30s. West Winds around 5 Mph. Chance of rain 20 percent.

Tonight 28 Dec Southern Fairfield

Rain and freezing rain in the Evening, then rain after midnight. Lows in the upper 20s. Southwest Winds 5 to 10 Mph. Chance of precipitation 90 percent.

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Grass Island Temperature Statistics

December Temperature

White Plains - Westchester County Airport (8.7 miles)

  • Lowest 5 December, 2025

    14 °F

  • Average December

    32.4 °F

  • Highest 19 December, 2025

    55.9 °F

Climate (2020–Present)

White Plains - Westchester County Airport (8.7 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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