Yale University Weather Forecast

    • 60
    • 73

    Rain Showers Likely

    • 60
    • 78

    Chance Rain Showers

    • 52
    • 80

    Mostly Sunny

    • 52
    • 71

    Mostly Sunny

    • 55
    • 72

    Partly Sunny

    • 58
    • 76

    Partly Sunny

Today 17 Sep Southern New Haven

Mostly cloudy. A chance of Showers in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the lower 70s. Northeast Winds 5 to 10 Mph, becoming east with Gusts up to 20 Mph in the afternoon. Chance of rain 50 percent.

Tonight 17 Sep Southern New Haven

Showers likely with a slight chance of Thunderstorms. Lows around 60. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.

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Yale University Temperature Statistics

September Temperature

New Haven, Tweed-New Haven Airport (3.7 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    68.5 °F

  • Highest 6 September, 2025

    82.9 °F

Climate (2020–Present)

New Haven, Tweed-New Haven Airport (3.7 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    55.8 °F

  • Average High 2020–2025

    63.8 °F
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