New Haven Harbor - Long Wharf Weather Forecast

    • 43
    • 50

    Rain Showers

    • 28
    • 56

    Rain Showers

    • 34
    • 42

    Mostly Cloudy

    • 24
    • 46

    Partly Sunny

    • 23
    • 34

    Partly Sunny

    • 31
    • 39

    Chance Rain/Snow

Today 18 Dec Southern New Haven

Sunny. Highs around 50. Light and variable Winds, becoming southeast 5 to 10 Mph.

Tonight 18 Dec Southern New Haven

A chance of Showers in the Evening, then Showers after midnight. Breezy and not as cool with Lows in the lower 40s. Temperature rising into the lower 50s after midnight. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to south 20 to 25 Mph with Gusts up to 35 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

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New Haven Harbor - Long Wharf Temperature Statistics

December Temperature

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

  • Lowest 5 December, 2025

    16 °F

  • Average December

    33.1 °F

  • Highest 10 December, 2025

    50 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    55.8 °F

  • Average High 2020–2025

    63.7 °F
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