Cos Cob Harbor Weather Forecast

    • 53
    • 67

    Chance Rain

    • 53
    • 68

    Mostly Cloudy

    • 54
    • 66

    Chance Rain Showers

    • 55
    • 66

    Chance Rain Showers

    • 56
    • 65

    Slight Chance Rain Showers

Today 22 Sep Southern Fairfield

Mostly cloudy. Highs in the upper 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Sep Southern Fairfield

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the lower 50s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cos Cob Harbor Temperature Statistics

September Temperature

White Plains - Westchester County Airport (6.2 miles)

  • Lowest 15 September, 2026

    51.1 °F

  • Average September

    68.8 °F

  • Highest 10 September, 2026

    84 °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 °F

  • Average High 2021–2026

    62.3 °F
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