Grass Island Weather Forecast

    • 75
    • 85

    Chance Thunderstorms

    • 75
    • 85

    Chance Thunderstorms

    • 72
    • 85

    Mostly Sunny

    • 75
    • 85

    Slight Chance Thunderstorms

    • 72
    • 85

    Chance Thunderstorms

    • 71
    • 82

    Chance Rain Showers

Today 7 Aug Southern Fairfield

Partly sunny. Patchy fog this morning. A chance of Showers and Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds and heavy rainfall this afternoon. Highs in the upper 80s. Northwest Winds around 5 Mph, becoming southwest around 5 Mph this afternoon. Chance of rain 40 percent. Heat index Values up to 100.

Tonight 7 Aug Southern Fairfield

Mostly cloudy. Thunderstorms likely with a chance of Showers in the Evening, then a chance of Showers and Thunderstorms after midnight. Patchy fog after midnight. Some Thunderstorms may produce gusty Winds and heavy rainfall in the evening. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 60 percent.

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Grass Island Temperature Statistics

August Temperature

White Plains - Westchester County Airport (8.7 miles)

  • Lowest 4 August, 2026

    61 °F

  • Average August

    74.6 °F

  • Highest 5 August, 2026

    86 °F

Climate (2021–2026)

White Plains - Westchester County Airport (8.7 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    62.3 °F
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