Housatonic River - Twomile Island Weather Forecast

    • 54
    • 62

    Rain

    • 57
    • 67

    Rain

    • 57
    • 66

    Rain

    • 57
    • 70

    Mostly Cloudy

    • 58
    • 73

    Partly Sunny

    • 60
    • 74

    Partly Sunny

Today 26 Sep Northern Fairfield

Rain, breezy with Highs around 60. North Winds 15 to 25 Mph with Gusts up to 40 Mph. Chance of rain 90 percent.

Tonight 26 Sep Northern Fairfield

Rain, breezy with Lows in the mid 50s. North Winds 20 to 25 Mph with Gusts up to 40 Mph. Chance of rain near 100 percent.

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Housatonic River - Twomile Island Temperature Statistics

September Temperature

New Haven, Tweed-New Haven Airport (9.3 miles)

  • Lowest 23 September, 2026

    50 °F

  • Average September

    67.9 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

New Haven, Tweed-New Haven Airport (9.3 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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