Round Island Weather Forecast

    • 66
    • 84

    Increasing Clouds

    • 60
    • 76

    Mostly Sunny

    • 68
    • 76

    Rain Showers Likely

    • 67
    • 77

    Slight Chance Rain Showers

    • 65
    • 78

    Partly Sunny

    • 69
    • 78

    Partly Sunny

Today 10 Sep Southern Fairfield

Partly sunny. A chance of Showers in the morning. Humid with Highs in the mid 80s. West Winds 10 to 15 Mph. Chance of rain 30 percent.

Tonight 10 Sep Southern Fairfield

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Round Island Temperature Statistics

September Temperature

White Plains - Westchester County Airport (5.6 miles)

  • Lowest 7 September, 2026

    53.1 °F

  • Average September

    69.4 °F

  • Highest 3 September, 2026

    82.9 °F

Climate (2021–2026)

White Plains - Westchester County Airport (5.6 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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