New Haven Harbor - Winter Harbor Weather Forecast

    • 54
    • 79

    Mostly Sunny

    • 57
    • 69

    Partly Sunny

    • 56
    • 68

    Rain Showers

    • 53
    • 67

    Chance Rain Showers

    • 50
    • 62

    Chance Rain Showers

    • 51
    • 62

    Chance Rain Showers

Today 18 Sep Southern New Haven

Sunny. Highs in the upper 70s. North Winds 5 to 10 Mph. Gusts up to 20 Mph in the morning.

Tonight 18 Sep Southern New Haven

Mostly clear in the Evening, then becoming partly cloudy. Cooler. Less humid with Lows in the lower 50s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

New Haven Harbor - Winter Harbor Temperature Statistics

September Temperature

New Haven, Tweed-New Haven Airport (2.5 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    69.4 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

New Haven, Tweed-New Haven Airport (2.5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    63.3 °F
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