Hammonasset Beach State Park Weather Forecast

    • 44
    • 60

    Partly Sunny

    • 39
    • 64

    Mostly Sunny

    • 37
    • 54

    Mostly Sunny

    • 41
    • 58

    Sunny

    • 47
    • 61

    Mostly Sunny

    • 48
    • 65

    Mostly Sunny

Today 21 Oct Southern New Haven

Sunny. Highs around 60. North Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 21 Oct Southern New Haven

Partly cloudy. Lows in the lower 40s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Hammonasset Beach State Park Temperature Statistics

October Temperature

Chester, Chester Airport (8.1 miles)

  • Lowest 18 October, 2026

    33.8 °F

  • Average October

    58.3 °F

  • Highest 2 October, 2026

    80.6 °F

Climate (2021–2026)

Chester, Chester Airport (8.1 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    62.5 °F
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