Cos Cob Harbor Weather Forecast

    • 69
    • 85

    Chance Thunderstorms

    • 69
    • 84

    Slight Chance Rain Showers

    • 70
    • 85

    Chance Thunderstorms

    • 62
    • 81

    Mostly Sunny

    • 62
    • 79

    Partly Sunny

    • 67
    • 79

    Chance Rain Showers

Today 11 Aug Southern Fairfield

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. West Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 11 Aug Southern Fairfield

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the upper 60s. Northwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cos Cob Harbor Temperature Statistics

August Temperature

White Plains - Westchester County Airport (6.2 miles)

  • Lowest 4 August, 2026

    61 °F

  • Average August

    76.3 °F

  • Highest 7 August, 2026

    89.1 °F

Climate (2021–2026)

White Plains - Westchester County Airport (6.2 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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