Grass Island Weather Forecast

    • 65
    • 81

    Becoming Sunny

    • 62
    • 79

    Rain Showers

    • 60
    • 72

    Mostly Sunny

    • 63
    • 76

    Mostly Sunny

    • 66
    • 78

    Partly Sunny

    • 71
    • 77

    Chance Rain Showers

Today 4 Sep Southern Fairfield

Sunny. Highs in the lower 80s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 4 Sep Southern Fairfield

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Island Temperature Statistics

September Temperature

White Plains - Westchester County Airport (8.7 miles)

  • Lowest 2 September, 2026

    62.1 °F

  • Average September

    67.5 °F

  • Highest 1 September, 2026

    78.1 °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 °F

  • Average High 2021–2026

    62.3 °F
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